Avoid segfault when yr_re_finalize is called before yr_re_initialize
Avoid segfault when yr_re_finalize is called before yr_re_initialize

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