fix fceu-next crash when load unif format nes rom

[shunyuan]

Here is the patch for fceumm-code/src/file.c to fix the crash when fceu-next load unif format nes rom (win32 platform).

The problem is read32le() internal will call memstream i/o to handle the stdio file pointer passed from FCEU_read32le().

@@ -435,10 +435,23 @@ int FCEU_read16le(uint16 val, FCEUFILE fp) { } *val = t[0] | (t[1] << 8); return(1); }

+static int fread32le(uint32 Bufo, MEM_TYPE fp) +{

• uint32 buf;
• if (fread(&buf, 1, 4, fp) < 4)
• return 0;

• ifdef LSB_FIRST

• (uint32)Bufo = buf;

• else

• (uint32)Bufo = ((buf & 0xFF) << 24) | ((buf & 0xFF00) << 8) | ((buf & 0xFF0000) >> 8) | ((buf & 0xFF000000) >> 24);

• endif

• return 1; +} + int FCEU_read32le(uint32 Bufo, FCEUFILE fp) {

  ifdef SUPPORTS_UNZIP_AND_GZIP

  if (fp->type >= 1) { uint8 t[4];

  ifndef LSB_FIRST

  @@ -465,11 +478,11 @@ int FCEU_read32le(uint32 Bufo, FCEUFILE fp) {

  endif

  return 1; } else

  endif

  {

• return read32le(Bufo, (FILE*)fp->fp);

• return fread32le(Bufo, (FILE*)fp->fp);

  } }

  int FCEU_fgetc(FCEUFILE *fp) {

  ifdef SUPPORTS_UNZIP_AND_GZIP

[Themaister]

Eh ... This is unusable. Please make a pull request with the patch.