added 2 if cases for empty years to check line for if it exists. shou…

[shinobu]

…ld fix #354

but it would be good if you test it with the files you had problems with @white-gecko

[white-gecko]

Could you please also follow the coding standards and style guide in code sniffer files?

FILE: ...niffer/Standards/Ontowiki/Sniffs/Commenting/FileCommentSniff.php
----------------------------------------------------------------------
FOUND 2 ERRORS AFFECTING 2 LINES
----------------------------------------------------------------------
 89 | ERROR | Expected "if (...) {\n"; found "if(...) {\n"
 98 | ERROR | Expected "if (...) {\n"; found "if(...) {\n"
----------------------------------------------------------------------

[shinobu]

done