Fix SimpleUnarchiver embedded archive detection
Fix SimpleUnarchiver embedded archive detection

Matiaz/theunarchiver,aleksejrs/theunarchiver,ethus3h/theunarchiver,jianlinwei/theunarchiver,venj/theunarchiver,3van/theunarchiver,galaxy001/theunarchiver,amolofos/theunarchiver,gco/theunarchiver,zammitjames/theunarchiver,cyranodb/theunarchiver,dsp2003/theunarchiver,Matiaz/theunarchiver,markcox/theunarchiver,sereko/theunarchiver,witwall/theunarchiver,gwerz/theunarchiver,jianlinwei/theunarchiver,markcox/theunarchiver,galaxy001/theunarchiver,aleksejrs/theunarchiver,dsp2003/theunarchiver,sereko/theunarchiver,gco/theunarchiver,jianlinwei/theunarchiver,zammitjames/theunarchiver,ethus3h/theunarchiver,pombreda/theunarchiver,letup/theunarchiver,witwall/theunarchiver,dsp2003/theunarchiver,zammitjames/theunarchiver,jsdf/theunarchiver,nagyist/theunarchiver,ethus3h/theunarchiver,siranwu/theunarchiver,jsdf/theunarchiver,galaxy001/theunarchiver,gwerz/theunarchiver,Jarvik7/theunarchiver,3van/theunarchiver,witwall/theunarchiver,nagyist/theunarchiver,Bulat-Ziganshin/theunarchiver,siranwu/theunarchiver,pombreda/theunarchiver,letup/theunarchiver,siranwu/theunarchiver,Matiaz/theunarchiver,aleksejrs/theunarchiver,Bulat-Ziganshin/theunarchiver,3van/theunarchiver,gwerz/theunarchiver,jsdf/theunarchiver,nagyist/theunarchiver,Jarvik7/theunarchiver,Jarvik7/theunarchiver,markcox/theunarchiver,amolofos/theunarchiver,gco/theunarchiver,cyranodb/theunarchiver,venj/theunarchiver,sereko/theunarchiver,amolofos/theunarchiver,letup/theunarchiver,venj/theunarchiver,pombreda/theunarchiver-migrated,pombreda/theunarchiver,pombreda/theunarchiver-migrated,pombreda/theunarchiver-migrated,Bulat-Ziganshin/theunarchiver,cyranodb/theunarchiver