Won't compile - Githubissues

Original error message
Arduino:

 1.6.12 (Windows 10), Board: "Arduino Nano, ATmega328"

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp: In member function 'FOUND_MESSAGE NDEF::decode_message(uint8_t*)':

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:61:58: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

                         m.format = (char *)(uint8_t)msg[0];

                                                          ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:95:9: warning: jump to case label [-fpermissive]

         default:

         ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:82:18: error:   crosses initialization of 'char mimetype [typeLength]'

             char mimetype [typeLength-2];

                  ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp: In member function 'uint8_t NDEF::encode_URI(uint8_t, uint8_t*)':

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:108:41: warning: narrowing conversion of '(((int)len) + 5)' from 'int' to 'uint8_t {aka unsigned char}' inside { } [-Wnarrowing]

     uint8_t payload_head[7] = {0x03, len+5, record_header, 0x01, len+1, 0x55, uriPrefix};

                                         ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:108:69: warning: narrowing conversion of '(((int)len) + 1)' from 'int' to 'uint8_t {aka unsigned char}' inside { } [-Wnarrowing]

     uint8_t payload_head[7] = {0x03, len+5, record_header, 0x01, len+1, 0x55, uriPrefix};

                                                                     ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp: In member function 'uint8_t NDEF::encode_TEXT(uint8_t*, uint8_t*)':

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:130:41: warning: narrowing conversion of '(((int)len) + 7)' from 'int' to 'uint8_t {aka unsigned char}' inside { } [-Wnarrowing]

     uint8_t payload_head[9] = {0x03, len+7, record_header, 0x01, len+3, 0x54, 0x02, lang[0], lang[1]};

                                         ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:130:69: warning: narrowing conversion of '(((int)len) + 3)' from 'int' to 'uint8_t {aka unsigned char}' inside { } [-Wnarrowing]

     uint8_t payload_head[9] = {0x03, len+7, record_header, 0x01, len+3, 0x54, 0x02, lang[0], lang[1]};

                                                                     ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp: In member function 'uint8_t NDEF::encode_MIME(uint8_t*, uint8_t*, uint8_t)':

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:151:52: warning: narrowing conversion of '((((int)len) + ((int)typeLen)) + 3)' from 'int' to 'uint8_t {aka unsigned char}' inside { } [-Wnarrowing]

     uint8_t payload_head[5] = {0x03, len + typeLen + 3, record_header, typeLen, len};

                                                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp: In member function 'char* NDEF::get_uri_prefix(uint8_t)':

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:185:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:187:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "http://www.";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:189:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "https://www.";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:191:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "http://";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:193:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "https://";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:195:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "tel:";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:197:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "mailto:";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:207:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "smb://";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:243:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "file://";

                    ^

C:\Program Files (x86)\Arduino\libraries\MFR522_NDEF-master\NDEF.cpp:257:20: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

             return "unknown";

                    ^

exit status 1
Error compiling for board Arduino Nano.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
Gargantuanman / MFR522_NDEF

Won't compile #1
