Minor optimization in FrameSelection::setNonDirectionalSelectionIfNeeded().

Source/core/editing/FrameSelection.cpp

Index: Source/core/editing/FrameSelection.cpp
diff --git a/Source/core/editing/FrameSelection.cpp b/Source/core/editing/FrameSelection.cpp
index 4177bbf1a05affb75df83edf94f8131e390afc03..851fda637deb75c24fe881981b0fa60e4fe9693c 100644
--- a/Source/core/editing/FrameSelection.cpp
+++ b/Source/core/editing/FrameSelection.cpp
@@ -197,11 +197,12 @@ void FrameSelection::setNonDirectionalSelectionIfNeeded(const VisibleSelection&
 
     VisiblePosition base = m_originalBase.isNotNull() ? m_originalBase : newSelection.visibleBase();
     VisiblePosition newBase = base;
-    VisiblePosition newExtent = newSelection.visibleExtent();
+    VisiblePosition extent = newSelection.visibleExtent();
+    VisiblePosition newExtent = extent;
     if (endpointsAdjustmentMode == AdjustEndpointsAtBidiBoundary)
         adjustEndpointsAtBidiBoundary(newBase, newExtent);
 
-    if (newBase != base || newExtent != newSelection.visibleExtent()) {
+    if (newBase != base || newExtent != extent) {
         m_originalBase = base;
         newSelection.setBase(newBase);
         newSelection.setExtent(newExtent);