Remove unnecessary counter decrement
Remove unnecessary counter decrement

number_of_signatures shouldn't be the index for the last signature, but the actual number of signatures.

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