file isExecutable
jabber: Use purple_strequal to compare possibly-null ft_proxies setting
Fixes a crash when logging in to migrated accounts, introduced by 5813479c8e02.
The release-2.x.y branch isn't affected because it didn't use NULL as the
default value.
g_str_equal() isn't even intended for comparisons like this, it's a hash table
equality function.