Fix crash when creating new NS frame (bug#43812)

* src/nsterm.m (ns_clear_under_internal_border): Check the frame is
live.

diff --git a/src/nsterm.m b/src/nsterm.m
index fdcd677d144c149ec5414da686518581238e9392..a702a051d00c31be39489f3b447dfa258f2f6c9a 100644 (file)
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -3032,7 +3032,7 @@ ns_clear_under_internal_border (struct frame *f)
 {
   NSTRACE ("ns_clear_under_internal_border");
 
-  if (FRAME_INTERNAL_BORDER_WIDTH (f) > 0)
+  if (FRAME_LIVE_P (f) && FRAME_INTERNAL_BORDER_WIDTH (f) > 0)
     {
       int border_width = FRAME_INTERNAL_BORDER_WIDTH (f);
       NSView *view = FRAME_NS_VIEW (f);