fix the bug in loop(); give a possibility to return from the loop() function - reviewed by dugsong
fix the bug in loop(); give a possibility to return from the loop() function
- reviewed by dugsong

afghanistanyn/pypcap,pombreda/pypcap,est/pypcap,afghanistanyn/pypcap,itxx00/pypcap,fasguard/fasguard-pcap,fasguard/fasguard-pcap,FunctionAnalysis/pypcap,est/pypcap,itxx00/pypcap,pombreda/pypcap,FunctionAnalysis/pypcap