Avoid segfaults if XIM is set but not xim_styles

Emacs segfaults at the X11 initialization if XIM is set
and xim_styles is NULL.  This patch avoids the crash.
* src/xfns.c: Check also if FRAME_X_XIM_STYLES(f) is NULL.
(Bug#42676)  (Bug#42673)  (Bug#42677)

Copyright-paperwork-exempt: yes

diff --git a/src/xfns.c b/src/xfns.c
index b89fac1cdac9d3861ff8aaba27192fcefbc6ee5d..f9a00a6dafd9f90bae1b4ca27fcd77740b9f9f09 100644 (file)
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -2658,7 +2658,7 @@ create_frame_xic (struct frame *f)
     goto out;
 
   xim = FRAME_X_XIM (f);
-  if (!xim)
+  if (!xim || ! FRAME_X_XIM_STYLES(f))
     goto out;
 
   /* Determine XIC style.  */