fix for fix: re-activating buttons to fix [#33466], meant the icon didn't get refreshed immediately.

source/blender/bmesh/intern/bmesh_interp.c

@@ -197,7 +197,6 @@ void BM_face_interp_from_face(BMesh *bm, BMFace *target, BMFace *source)
 
 	void **blocks   = BLI_array_alloca(blocks, source->len);
 	float (*cos_2d)[2] = BLI_array_alloca(cos_2d, source->len);
-	float *w        = BLI_array_alloca(w,      source->len);
 	float axis_mat[3][3];  /* use normal to transform into 2d xy coords */
 	int i;
 

source/blender/editors/interface/interface.c

@@ -645,6 +645,10 @@ static int ui_but_update_from_old_block(const bContext *C, uiBlock *block, uiBut
 				/* still stuff needs to be copied */
 				oldbut->rect = but->rect;
 				oldbut->context = but->context; /* set by Layout */
+
+				/* drawing */
+				oldbut->icon = but->icon;
+				oldbut->iconadd = but->iconadd;
 				
 				/* typically the same pointers, but not on undo/redo */
 				/* XXX some menu buttons store button itself in but->poin. Ugly */