avoid crash on null temp_window, thanks Phillip Kutin!

git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@1490 7f0cb862-5218-0410-a997-914c9d46530a

diff --git a/src/mswin/fg_main_mswin.c b/src/mswin/fg_main_mswin.c
index 9617875..4588ef6 100644 (file)
--- a/src/mswin/fg_main_mswin.c
+++ b/src/mswin/fg_main_mswin.c
@@ -269,7 +269,7 @@ LRESULT CALLBACK fgPlatformWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam,
         if (hwnd)   /* can be NULL if mouse outside parent by the time we get here */
         {
             temp_window = fgWindowByHandle(hwnd);
-            if (temp_window->Parent)    /* Verify we got a child window */
+            if (temp_window && temp_window->Parent)    /* Verify we got a child window */
                 child_window = temp_window;
         }
     }