Sculpt: Fix memory leak in undo system

Was not freeing undo nodes themselves.

diff --git a/source/blender/editors/sculpt_paint/sculpt_undo.c b/source/blender/editors/sculpt_paint/sculpt_undo.c
index bf5ddeb71ff04fbcd6a5a4833eaec8bfea96cb29..62e548f661cb97bb0f127ce98ad34a96acf81936 100644 (file)
--- a/source/blender/editors/sculpt_paint/sculpt_undo.c
+++ b/source/blender/editors/sculpt_paint/sculpt_undo.c
@@ -589,10 +589,9 @@ static void sculpt_undo_restore_list(bContext *C, ListBase *lb)
 
 static void sculpt_undo_free_list(ListBase *lb)
 {
-       SculptUndoNode *unode;
-       int i;
-
-       for (unode = lb->first; unode; unode = unode->next) {
+       SculptUndoNode *unode = lb->first;
+       while (unode != NULL) {
+               SculptUndoNode *unode_next = unode->next;
                if (unode->co)
                        MEM_freeN(unode->co);
                if (unode->no)
@@ -606,7 +605,7 @@ static void sculpt_undo_free_list(ListBase *lb)
                if (unode->vert_hidden)
                        MEM_freeN(unode->vert_hidden);
                if (unode->grid_hidden) {
-                       for (i = 0; i < unode->totgrid; i++) {
+                       for (int i = 0; i < unode->totgrid; i++) {
                                if (unode->grid_hidden[i])
                                        MEM_freeN(unode->grid_hidden[i]);
                        }
@@ -627,6 +626,10 @@ static void sculpt_undo_free_list(ListBase *lb)
                        CustomData_free(&unode->bm_enter_ldata, unode->bm_enter_totloop);
                if (unode->bm_enter_totpoly)
                        CustomData_free(&unode->bm_enter_pdata, unode->bm_enter_totpoly);
+
+               MEM_freeN(unode);
+
+               unode = unode_next;
        }
 }