Fix T71260: GPencil crash when drawing very long lines

There were two problems:

1) When the buffer was reallocate, the pointer was corrupted.
2) Short variables were too small to hold long lines.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/editors/gpencil/gpencil_utils.c b/source/blender/editors/gpencil/gpencil_utils.c
index b194d28a8b8..3ca993673d4 100644
--- a/source/blender/editors/gpencil/gpencil_utils.c
+++ b/source/blender/editors/gpencil/gpencil_utils.c
@@ -2530,8 +2530,8 @@ void ED_gpencil_select_toggle_all(bContext *C, int action)
 
 /* Ensure the SBuffer (while drawing stroke) size is enough to save all points of the stroke */
 tGPspoint *ED_gpencil_sbuffer_ensure(tGPspoint *buffer_array,
-                                     short *buffer_size,
-                                     short *buffer_used,
+                                     int *buffer_size,
+                                     int *buffer_used,
                                      const bool clear)
 {
   tGPspoint *p = NULL;