Xext: shape: fix non-ximerama build

In the non-XINERAMA code path, a parameter was missing.

Fixes: a57db845bb
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

Xext/shape.c

@@ -316,7 +316,7 @@ ProcShapeRectangles(ClientPtr client)
     }
     return result;
 #else
-    return ShapeRectangles(client);
+    return ShapeRectangles(client, stuff);
 #endif
 }