Locale/language bug fix in pe module
Locale/language bug fix in pe module

  A change introduced in commit 75babbc0248f14b3ecb135c88d592268f1c1edce
  silently broke language check due to integer size and signedness.

  Tested using pe.language(0x04) on file 33659578e2f6e143c4e0533d598bf690

pombredanne/yara,hillu/yara,wxsBSD/yara,VirusTotal/yara,pombredanne/yara,cblichmann/yara,plusvic/yara,wxsBSD/yara,cblichmann/yara,hillu/yara,wxsBSD/yara,plusvic/yara,hillu/yara,wxsBSD/yara,plusvic/yara,cblichmann/yara,pombredanne/yara,plusvic/yara,cblichmann/yara,pombredanne/yara,cblichmann/yara,wxsBSD/yara,VirusTotal/yara,pombredanne/yara,plusvic/yara,VirusTotal/yara,hillu/yara,VirusTotal/yara,hillu/yara,VirusTotal/yara