regedit: Grow the buffer when modifying a DWORD value.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=19098Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

regedit: Grow the buffer when modifying a DWORD value.
75d8081d · Alistair Leslie-Hughes · Alexandre Julliard · 9491a5e5 · 75d8081d
Commit 75d8081d authored Mar 20, 2019 by Alistair Leslie-Hughes Committed by Alexandre Julliard Mar 21, 2019
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edit.c programs/regedit/edit.c +3 -1

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--- a/programs/regedit/edit.c
+++ b/programs/regedit/edit.c
@@ -283,7 +283,9 @@ BOOL ModifyValue(HWND hwnd, HKEY hKeyRoot, LPCWSTR keyPath, LPCWSTR valueName)
        }
    } else if ( type == REG_DWORD ) {
        static const WCHAR x[] = {'%','x',0};
-        wsprintfW(stringValueData, x, *((DWORD*)stringValueData));
+        DWORD value = *((DWORD*)stringValueData);
+        stringValueData = heap_xrealloc(stringValueData, 64);
+        wsprintfW(stringValueData, x, value);
 	if (DialogBoxW(0, MAKEINTRESOURCEW(IDD_EDIT_DWORD), hwnd, modify_dlgproc) == IDOK) {
 	    DWORD val;
 	    CHAR* valueA = GetMultiByteString(stringValueData);