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

git-svn-id: svn://svn.tartarus.org/sgt/putty@9958 cda61777-01e9-0310-a592-d414129be87e

diff --git a/windows/winctrls.c b/windows/winctrls.c
index c9300cd..60e32f5 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: