shell32: Native RegisterClassEx requires cbSize to be set.

diff --git a/dlls/shell32/control.c b/dlls/shell32/control.c
index aabe89ef45a035885dc2766cb0f7f384a700a604..3346ddc878e149c443a84ab50425f5ec7ba4b4ad 100644 (file)
--- a/dlls/shell32/control.c
+++ b/dlls/shell32/control.c
@@ -622,6 +622,7 @@ static void    Control_DoInterface(CPanel* panel, HWND hWnd, HINSTANCE hInst)
 
     LoadStringW(shell32_hInstance, IDS_CPANEL_TITLE, appName, sizeof(appName) / sizeof(appName[0]));
 
+    wc.cbSize = sizeof(wc);
     wc.style = CS_HREDRAW|CS_VREDRAW;
     wc.lpfnWndProc = Control_WndProc;
     wc.cbClsExtra = 0;