Alex Henrie : comctl32: Fix memory leak on error path in EDIT_MakeUndoFit.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0b09db5902abad62ca7b9a3393b3090544fc5258
URL:    https://gitlab.winehq.org/wine/wine/-/commit/0b09db5902abad62ca7b9a3393b3090...

Author: Alex Henrie 
Date:   Sun Nov 13 21:32:22 2022 -0700

comctl32: Fix memory leak on error path in EDIT_MakeUndoFit.

---

dlls/comctl32/edit.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/comctl32/edit.c b/dlls/comctl32/edit.c
index a9a469ffd47..96ed2b0ae1b 100644
--- a/dlls/comctl32/edit.c
+++ b/dlls/comctl32/edit.c
@@ -1292,6 +1292,7 @@ static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size)
 static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
 {
    UINT alloc_size;
+	WCHAR *new_undo_text;

if (size <= es->undo_buffer_size)
    	return TRUE;
@@ -1299,7 +1300,8 @@ static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
    TRACE("trying to ReAlloc to %d+1\n", size);

alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
-	if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
+	if ((new_undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
+		es->undo_text = new_undo_text;
    	es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
    	return TRUE;
    }