[Cleanup] No need for extra boolean variable in FrameSelection::caretBlinkTimerFired

Source/core/editing/FrameSelection.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1611 matching lines @@
     if (!focusedElement)
         return false;
 
     return focusedElement->containsIncludingShadowDOM(m_selection.start().anchorNode());
 }
 
 void FrameSelection::caretBlinkTimerFired(Timer<FrameSelection>*)
 {
     ASSERT(caretIsVisible());
     ASSERT(isCaret());
-    bool caretPaint = m_caretPaint;
-    if (isCaretBlinkingSuspended() && caretPaint)
+    if (isCaretBlinkingSuspended() && m_caretPaint)
         return;
-    m_caretPaint = !caretPaint;
+    m_caretPaint = !m_caretPaint;
     invalidateCaretRect();
 }
 
 void FrameSelection::notifyRendererOfSelectionChange(EUserTriggered userTriggered)
 {
     m_frame->document()->updateRenderTreeIfNeeded();
 
     if (HTMLTextFormControlElement* textControl = enclosingTextFormControl(start()))
         textControl->selectionChanged(userTriggered == UserTriggered);
 }
@@ skipping 241 matching lines @@
     sel.showTreeForThis();
 }
 
 void showTree(const WebCore::FrameSelection* sel)
 {
     if (sel)
         sel->showTreeForThis();
 }
 
 #endif