Add a missing null pointer check in one of the dialog box functions.

[originally from svn r9958]

diff --git a/windows/winctrls.c b/windows/winctrls.c
index c9300cdd82d10057c08cdda34a0a1d8d011cc407..60e32f5e6ec3afb28c5482eb17cf6dd1435e8d7a 100644 (file)
--- a/windows/winctrls.c
+++ b/windows/winctrls.c
@@ -2366,6 +2366,8 @@ void dlg_set_focus(union control *ctrl, void *dlg)
     struct winctrl *c = dlg_findbyctrl(dp, ctrl);
     int id;
     HWND ctl;
+    if (!c)
+        return;
     switch (ctrl->generic.type) {
       case CTRL_EDITBOX: id = c->base_id + 1; break;
       case CTRL_RADIO: