Fixes an allocation bug in IPV6

This bug was causing a stack overwrite while storing the compressed ip
in the newly allocated connection (upon receiving a packet).

Due to alignment (bad) luck, the bug was present only on a linux 32 bits system.
Removes buggy call
Merge pull request #19 from hauspie/fix_ipv6_tmp_connection

Fix ipv6 tmp connection issue
Merge branch 'develop' into diminish_size

Conflicts:
	core/input.c