Clear LayoutSVGText's frame rect if no line boxes are produced

Source/core/layout/svg/LayoutSVGText.cpp

Index: Source/core/layout/svg/LayoutSVGText.cpp
diff --git a/Source/core/layout/svg/LayoutSVGText.cpp b/Source/core/layout/svg/LayoutSVGText.cpp
index 77badd66b6301b33606001631a76f818fb8f98ce..458fb85b4f7dfefb6a3199e04c41bad8e0e2f526 100644
--- a/Source/core/layout/svg/LayoutSVGText.cpp
+++ b/Source/core/layout/svg/LayoutSVGText.cpp
@@ -395,6 +395,10 @@ void LayoutSVGText::layout()
     if (m_needsReordering)
         m_needsReordering = false;
 
+    // If we don't have any line boxes, then make sure the frame rect is still cleared.
+    if (!firstLineBox())
+        setFrameRect(LayoutRect());
+
     if (!updateCachedBoundariesInParents)
         updateCachedBoundariesInParents = oldBoundaries != objectBoundingBox();