Fix crashes when "emacsclient -nw" frames are suspended (bug#78980)

* src/frame.c (frame_redisplay_p): Start loop with 'f', not its parent
frame.  Simplify return expression.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/frame.c b/src/frame.c
index 70e200d9219..36ce36436f3 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -364,8 +364,8 @@ frame_redisplay_p (struct frame *f)
 {
   if (is_tty_frame (f))
     {
-      struct frame *p = FRAME_PARENT_FRAME (f);
-      struct frame *q = NULL;
+      struct frame *p = f;
+      struct frame *q = f;
 
       while (p)
         {
@@ -387,7 +387,7 @@ frame_redisplay_p (struct frame *f)
          frame of its terminal.  Any other tty frame can be redisplayed
          iff it is the top frame of its terminal itself which must be
          always visible.  */
-      return (q ? q == r : f == r);
+      return q == r;
     }
   else
 #ifndef HAVE_X_WINDOWS