add release-mode checks for null, at least for a while

include/core/SkTLazy.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
@@ skipping 48 matching lines @@
         return fPtr;
     }
 
     /**
      *  Copy src into this, and return a pointer to a copy of it. Note this
      *  will always return the same pointer, so if it is called on a lazy that
      *  has already been initialized, then this will copy over the previous
      *  contents.
      */
     T* set(const T& src) {
+        // Diagnoistic. May remove later. See crbug.com/364224
+        if (NULL == &src) {
+            sk_throw();
+        }
+
         if (this->isValid()) {
             *fPtr = src;
         } else {
             fPtr = new (SkTCast<T*>(fStorage)) T(src);
         }
         return fPtr;
     }
 
     /**
      * Destroy the lazy object (if it was created via init() or set())
@@ skipping 104 matching lines @@
     operator const T*() const { return fObj; }
 
     const T& operator *() const { return *fObj; }
 
 private:
     const T*    fObj;
     SkTLazy<T>  fLazy;
 };
 
 #endif