From 8d473cf9743f1d30a16a27114e93bd5af5648d23 Mon Sep 17 00:00:00 2001
From: Simon Hausmann <simon.hausmann@nokia.com>
Date: Fri, 18 May 2012 14:03:11 +0200
Subject: Imported WebKit commit 1350e72f7345ced9da2bd9980deeeb5a8d62fab4
 (http://svn.webkit.org/repository/webkit/trunk@117578)

Weekly snapshot
---
 Source/WebCore/rendering/RenderTextControl.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'Source/WebCore/rendering/RenderTextControl.cpp')

diff --git a/Source/WebCore/rendering/RenderTextControl.cpp b/Source/WebCore/rendering/RenderTextControl.cpp
index ddc647570..8b138352e 100644
--- a/Source/WebCore/rendering/RenderTextControl.cpp
+++ b/Source/WebCore/rendering/RenderTextControl.cpp
@@ -208,6 +208,9 @@ bool RenderTextControl::hasValidAvgCharWidth(AtomicString family)
 {
     static HashSet<AtomicString>* fontFamiliesWithInvalidCharWidthMap = 0;
 
+    if (family.isEmpty())
+        return false;
+
     if (!fontFamiliesWithInvalidCharWidthMap) {
         fontFamiliesWithInvalidCharWidthMap = new HashSet<AtomicString>;
 
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