[PATCH 3/3] comctl32: Make sure line_widths is big enough.

[Yuxuan Shui]

From: Yuxuan Shui

When button_count is 0, we would allocate 0 bytes for line_widths, but later line_count would be 1
so we would still try to access line_widths[0] which is out-of-bound.
---
 dlls/comctl32/taskdialog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/comctl32/taskdialog.c b/dlls/comctl32/taskdialog.c
index 2f8f6de5a4e..c6815cff9ac 100644
--- a/dlls/comctl32/taskdialog.c
+++ b/dlls/comctl32/taskdialog.c
@@ -965,7 +965,7 @@ static void taskdialog_layout(struct taskdialog_info *dialog_info)

/* Common and custom buttons */
     button_layout_infos = Alloc(dialog_info->button_count * sizeof(*button_layout_infos));
-    line_widths = Alloc(dialog_info->button_count * sizeof(*line_widths));
+    line_widths = Alloc(max(dialog_info->button_count, 1) * sizeof(*line_widths));

button_min_width = DIALOG_BUTTON_WIDTH;
     button_height = DIALOG_BUTTON_HEIGHT;