<br> nodes should not be allowed within SVG text

Source/core/rendering/svg/RenderSVGTSpan.cpp

 /*
  * This file is part of the WebKit project.
  *
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 18 matching lines @@
 
 namespace WebCore {
 
 RenderSVGTSpan::RenderSVGTSpan(Element* element)
     : RenderSVGInline(element)
 {
 }
 
 bool RenderSVGTSpan::isChildAllowed(RenderObject* child, RenderStyle*) const
 {
-    // Always allow text (except empty textnodes).
+    // Always allow text (except empty textnodes and <br>).
     if (child->isText())
-        return !SVGRenderSupport::isEmptySVGInlineText(child);
+        return SVGRenderSupport::isRenderableTextNode(child);
 
 #if ENABLE(SVG_FONTS)
     // Only allow other types of  children if this is not an 'altGlyph'.
     if (node()->hasTagName(SVGNames::altGlyphTag))
         return false;
 #endif
 
     return child->isSVGInline() && !child->isSVGTextPath();
 }
 
 }