Fix mistakes in r11472

src/ia32/stub-cache-ia32.cc

 // Copyright 2012 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 3626 matching lines @@
               __ SmiUntag(ecx);
               __ mov_b(Operand(edi, ecx, times_1, 0), ebx);
               break;
             case EXTERNAL_SHORT_ELEMENTS:
             case EXTERNAL_UNSIGNED_SHORT_ELEMENTS:
               __ mov_w(Operand(edi, ecx, times_1, 0), ebx);
               break;
             case EXTERNAL_INT_ELEMENTS:
             case EXTERNAL_UNSIGNED_INT_ELEMENTS:
               __ mov(Operand(edi, ecx, times_2, 0), ebx);
+              break;
             default:
               UNREACHABLE();
               break;
           }
         }
         __ ret(0);  // Return original value.
       }
     }
   }
 
@@ skipping 409 matching lines @@
     __ jmp(ic_slow, RelocInfo::CODE_TARGET);
   }
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32