Simpler return value of HashTable::add/HashMap:add and others

Source/core/svg/animation/SMILTimeContainer.cpp

 /*
  * Copyright (C) 2008 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 54 matching lines @@
 {
     ASSERT(animation->timeContainer() == this);
     ASSERT(target);
     ASSERT(animation->hasValidAttributeName());
 
 #ifndef NDEBUG
     ASSERT(!m_preventScheduledAnimationsChanges);
 #endif
 
     ElementAttributePair key(target, attributeName);
-    OwnPtr<AnimationsVector>& scheduled = m_scheduledAnimations.add(key, nullptr).iterator->value;
+    OwnPtr<AnimationsVector>& scheduled = m_scheduledAnimations.add(key, nullptr).storedValue->value;
     if (!scheduled)
         scheduled = adoptPtr(new AnimationsVector);
     ASSERT(!scheduled->contains(animation));
     scheduled->append(animation);
 
     SMILTime nextFireTime = animation->nextProgressTime();
     if (nextFireTime.isFinite())
         notifyIntervalsChanged();
 }
 
@@ skipping 265 matching lines @@
 
             if (animDiscard->inDocument()) {
                 animDiscard->remove(IGNORE_EXCEPTION);
                 ASSERT(!animDiscard->inDocument());
             }
         }
     }
 }
 
 }