Correct a possible free after use.

src/core/SkGlyphCache_Globals.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGlyphCache_Globals_DEFINED
 #define SkGlyphCache_Globals_DEFINED
 
@@ skipping 56 matching lines @@
     // returns true if this cache is over-budget either due to size limit
     // or count limit.
     bool isOverBudget() const {
         return fCacheCount > fCacheCountLimit ||
                fTotalMemoryUsed.load() > fCacheSizeLimit;
     }
 
     void purgeAll(); // does not change budget
 
     // call when a glyphcache is available for caching (i.e. not in use)
-    void attachCacheToHead(SkGlyphCache*);
+    void internalAttachCacheToHead(SkGlyphCache*);
 
     // can only be called when the mutex is already held
     void internalMoveToHead(SkGlyphCache *);
 
     // Checkout budgets, modulated by the specified min-bytes-needed-to-purge,
     // and attempt to purge caches to match.
     // Returns number of bytes freed.
     void internalDetachCache(SkGlyphCache* cache);
     size_t internalPurge(size_t minBytesNeeded = 0);
 
 private:
     SkGlyphCache*    fHead;
     SkAtomic<size_t> fTotalMemoryUsed;
     size_t           fCacheSizeLimit;
     int32_t          fCacheCountLimit;
     int32_t          fCacheCount;
 
 };
 
 #endif