[PATCH v3 1/1] winex11: Always initialize escape.drawable in X11DRV_GetDC().

[Zebediah Figura]

From: Zebediah Figura

---
 dlls/winex11.drv/window.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 70a29d24fb1..8620ce1ec55 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -26,6 +26,7 @@

#include "config.h"

+#include <assert.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -2297,6 +2298,8 @@ void X11DRV_GetDC( HDC hdc, HWND hwnd, HWND top, const RECT *win_rect,
     struct x11drv_escape_set_drawable escape;
     HWND parent;

+    assert( hwnd );
+
     escape.code = X11DRV_SET_DRAWABLE;
     escape.mode = IncludeInferiors;

@@ -2317,6 +2320,10 @@ void X11DRV_GetDC( HDC hdc, HWND hwnd, HWND top, const RECT *win_rect,
     }
     else
     {
+        /* gcc detects that "escape.drawable" may be used uninitialized if
+         * "hwnd" is NULL */
+        escape.drawable = 0;
+
         /* find the first ancestor that has a drawable */
         for (parent = hwnd; parent && parent != top; parent = NtUserGetAncestor( parent, GA_PARENT ))
             if ((escape.drawable = X11DRV_get_whole_window( parent ))) break;