Fix crashes in x_tooltip_window_to_frame on GTK

* src/xterm.c (x_tooltip_window_to_frame): Ignore all non-X
frames instead of trying to get their tooltip window.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/xterm.c b/src/xterm.c
index 77dea3ad4d1..ed8f0681360 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -10453,6 +10453,9 @@ x_tooltip_window_to_frame (struct x_display_info *dpyinfo,
         return f;
 
 #ifdef USE_GTK
+      if (!FRAME_X_P (f))
+        continue;
+
       if (FRAME_X_OUTPUT (f)->ttip_window)
         widget = GTK_WIDGET (FRAME_X_OUTPUT (f)->ttip_window);
       else