Remove unnecessary break-after-return in switch statement

src/elements.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 572 matching lines @@
       return elements_accessors_[JSObject::EXTERNAL_UNSIGNED_INT_ELEMENTS];
     case EXTERNAL_FLOAT_ARRAY_TYPE:
       return elements_accessors_[JSObject::EXTERNAL_FLOAT_ELEMENTS];
     case EXTERNAL_DOUBLE_ARRAY_TYPE:
       return elements_accessors_[JSObject::EXTERNAL_DOUBLE_ELEMENTS];
     case EXTERNAL_PIXEL_ARRAY_TYPE:
       return elements_accessors_[JSObject::EXTERNAL_PIXEL_ELEMENTS];
     default:
       UNREACHABLE();
       return NULL;
-      break;
   }
 }
 
 
 void ElementsAccessor::InitializeOncePerProcess() {
   static struct ConcreteElementsAccessors {
     FastElementsAccessor fast_elements_handler;
     FastDoubleElementsAccessor fast_double_elements_handler;
     DictionaryElementsAccessor dictionary_elements_handler;
     NonStrictArgumentsElementsAccessor non_strict_arguments_elements_handler;
@@ skipping 22 matching lines @@
     &element_accessors.float_elements_handler,
     &element_accessors.double_elements_handler,
     &element_accessors.pixel_elements_handler
   };
 
   elements_accessors_ = accessor_array;
 }
 
 
 } }  // namespace v8::internal