Fixing blocker bug 106474. Make nsAFlatString::GetReadableFragment() deal with a null buffer handles correctly. r=kin@netscape.com, sr=scc@mozilla.org

git-svn-id: svn://10.0.0.236/trunk@106189 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/string/src/nsAFlatString.cpp

@@ -33,7 +33,9 @@ nsAFlatString::GetReadableFragment( const_fragment_type& aFragment, nsFragmentRe
         case kFragmentAt:
           {
             const buffer_handle_type* buffer = GetBufferHandle();
-            NS_ASSERTION(buffer, "trouble: no buffer!");
+
+            if ( !buffer )
+              return 0;
 
             aFragment.mEnd = buffer->DataEnd();
             return (aFragment.mStart = buffer->DataStart()) + aOffset;