module-ghttp: No need to initialize s_ip to zero.

The structure is already zeroed, also when IPv6 is enabled
s_ip is not a value but a structure and without this fix oscam do
not compile.

This fixes #3063.

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@8116 4b0bc96b-bc66-0410-9d44-ebda105a78c1