From 1c39a8100bac6dbdae57f1836b422c96b7846e24 Mon Sep 17 00:00:00 2001
From: Andreas Wagner <mail@andreaswagner.org>
Date: Sun, 23 Dec 2012 11:45:44 -0500
Subject: [PATCH] Bug 550175 - Check if a row in an autocomplete popup is
 selected while pressing DEL. r=mak

---
 .../components/autocomplete/nsAutoCompleteController.cpp    | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/toolkit/components/autocomplete/nsAutoCompleteController.cpp b/toolkit/components/autocomplete/nsAutoCompleteController.cpp
index d1acf20e2ec..9ed999d37e7 100644
--- a/toolkit/components/autocomplete/nsAutoCompleteController.cpp
+++ b/toolkit/components/autocomplete/nsAutoCompleteController.cpp
@@ -535,6 +535,12 @@ nsAutoCompleteController::HandleDelete(bool *_retval)
 
   int32_t index, searchIndex, rowIndex;
   popup->GetSelectedIndex(&index);
+  if (index == -1) {
+    // No row is selected in the list
+    HandleText();
+    return NS_OK;
+  }
+
   RowIndexToSearch(index, &searchIndex, &rowIndex);
   NS_ENSURE_TRUE(searchIndex >= 0 && rowIndex >= 0, NS_ERROR_FAILURE);