stack: protect set_visible_child_name from NULL stack
authorMarco Trevisan (Treviño) <mail@3v1n0.net>
Thu, 19 Apr 2018 01:58:57 +0000 (20:58 -0500)
committerMarco Trevisan <mail@3v1n0.net>
Thu, 19 Apr 2018 08:40:17 +0000 (08:40 +0000)
commitc15b64b7206e6c6d129b5d732878bc61221390d5
treea0a28f30416776f2a2b3b32eb5237d9efb8dc906
parente30176a5228228f28f914d87120b9a650d0073b8
stack: protect set_visible_child_name from NULL stack

Return with error if gtk_stack_set_visible_child_name is called
with NULL parameter

(cherry picked from commit 2ee5aee4a9f01cce3dda7dff877070b62c3e2880)
gtk/gtkstack.c