[PATCH v3 0/4] proxy.cgi fixes for bugzilla #10852

v2 -> v3

- Network::network2bin: use 'return ();' instead of plain 'return;'

- Network::network_qual: fix identation problem

- proxy.cgi::writepacfile: use 'chomp(@templist);' once before loop

v1 -> v2

- Network::network_qual: Improved check if array is fully defined. Honestly, the testsuite of the unpatched file still fails on my IPFire for an unknown reason. The patches fixe the issue for me using perl v5.12.3 as well as v5.26.1.

- Network::network2bin: 'return undef;' doesn't return an empty list causing lots of headaches. Popular sites strongly recommend to use 'return;' instead of 'return undef;'. Maybe 'return undef;' should be avoided everywhere in IPFire.

Have fun, Bernhard