[Bf-blender-cvs] [803d9f97487] blender-v3.3-release: Fix T101317: GPencil separate Active layer freezes blender

[Antonio Vazquez]

Commit: 803d9f974876303e3c6c4a32743589c2efe10127
Author: Antonio Vazquez
Date:   Sun Sep 25 12:26:48 2022 +0200
Branches: blender-v3.3-release
https://developer.blender.org/rB803d9f974876303e3c6c4a32743589c2efe10127

Fix T101317: GPencil separate Active layer freezes blender

The error occurs only when the layer is empty.

===================================================================

M	source/blender/editors/gpencil/gpencil_edit.c

===================================================================

diff --git a/source/blender/editors/gpencil/gpencil_edit.c b/source/blender/editors/gpencil/gpencil_edit.c
index 1e666f8c1dd..4e91e27e78e 100644
--- a/source/blender/editors/gpencil/gpencil_edit.c
+++ b/source/blender/editors/gpencil/gpencil_edit.c
@@ -4820,7 +4820,9 @@ static int gpencil_stroke_separate_exec(bContext *C, wmOperator *op)
   for (int slot = 1; slot <= ob_dst->totcol; slot++) {
     while (slot <= ob_dst->totcol && !BKE_object_material_slot_used(ob_dst, slot)) {
       ob_dst->actcol = slot;
-      BKE_object_material_slot_remove(bmain, ob_dst);
+      if (!BKE_object_material_slot_remove(bmain, ob_dst)) {
+        break;
+      }
       if (actcol >= slot) {
         actcol--;
       }