Subject: Segfault when showing non-GTK+ tooltip

From: Tobias Getzner <[email-masked]>
Date: Sat, 13 Jun 2015 11:18:38 +0200

When x-gtk-use-system-tooltips is set to nil, and the tooltip face is
customized using an invalid color string such as #zz, Emacs will
segfault when a tooltip is being drawn.

This is for Emacs 24.5.
 Best regards,
TG