Fix bug in Window's version of is_directory function
Fix bug in Window's version of is_directory function

wxsBSD/yara,msuvajac/yara,rayyang2000/yara,foreni-packages/yara,kallanreed/yara,mgoffin/yara,frbapolkosnik/yara,jshufelt/yara,frbapolkosnik/yara,bmagistro/yara,digideskio/yara,msuvajac/yara,neatsun/yara,pombredanne/yara,plusvic/yara,beikezcs/yara,pombredanne/yara,tanium/yara,cblichmann/yara,plusvic/yara,jpypi/yara,pombredanne/yara,smaudet/yara,jshufelt/yara,VirusTotal/yara,MeteorAdminz/yara,hillu/yara,Security513/yara,cblichmann/yara,hillu/yara,kallanreed/yara,plusvic/yara,plusvic/yara,foreni-packages/yara,frbapolkosnik/yara,hillu/yara,VirusTotal/yara,rednaga/yara,pombredanne/yara,jshufelt/yara,kallanreed/yara,binsrc/yara,jshufelt/yara,jpypi/yara,mgoffin/yara,beikezcs/yara,tanium/yara,hillu/yara,msuvajac/yara,mgoffin/yara,0x0mar/yara,smaudet/yara,VirusTotal/yara,tdr130/yara,0x0mar/yara,pombredanne/yara,plusvic/yara,tdr130/yara,wxsBSD/yara,foreni-packages/yara,MeteorAdminz/yara,MeteorAdminz/yara,Security513/yara,bmagistro/yara,0x0mar/yara,neatsun/yara,tanium/yara,VirusTotal/yara,0x0mar/yara,Security513/yara,digideskio/yara,bmagistro/yara,neatsun/yara,binsrc/yara,rednaga/yara,rayyang2000/yara,mgoffin/yara,smaudet/yara,beikezcs/yara,cblichmann/yara,digideskio/yara,wxsBSD/yara,wxsBSD/yara,jpypi/yara,rednaga/yara,smaudet/yara,rayyang2000/yara,digideskio/yara,binsrc/yara,binsrc/yara,frbapolkosnik/yara,cblichmann/yara,tdr130/yara,hillu/yara,wxsBSD/yara,cblichmann/yara,VirusTotal/yara