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-rw-r--r--embed/mozilla/EphyBrowser.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/embed/mozilla/EphyBrowser.cpp b/embed/mozilla/EphyBrowser.cpp
index efb8a80d2..da69e21b3 100644
--- a/embed/mozilla/EphyBrowser.cpp
+++ b/embed/mozilla/EphyBrowser.cpp
@@ -220,6 +220,7 @@ EphyModalAlertEventListener::HandleEvent (nsIDOMEvent * aDOMEvent)
/* make sure the event is trusted */
nsCOMPtr<nsIDOMNSEvent> nsEvent (do_QueryInterface (aDOMEvent));
+ NS_ENSURE_TRUE (nsEvent, NS_ERROR_FAILURE);
PRBool isTrusted = PR_FALSE;
nsEvent->GetIsTrusted (&isTrusted);
if (!isTrusted) return NS_OK;