box: Remove some unneeded checks
authorTimm Bäder <mail@baedert.org>
Tue, 16 Jan 2018 17:47:52 +0000 (18:47 +0100)
committerTimm Bäder <mail@baedert.org>
Wed, 17 Jan 2018 20:57:19 +0000 (21:57 +0100)
commitc2d4f05ce0b85c175e2177dc19142a10660200e3
treed93c7bafb30485c20978f10b63bc476f792ee760
parentc4750475018e93b36ce5e8dd8bf9aa16656b3b77
box: Remove some unneeded checks

We only call this function from the measure implementation and we should
never get NULL pointers there.
gtk/gtkbox.c