Fix a missing break from a switch case -Wimplicit-fallthrough

Author: jvoung

clang/lib/Analysis/FlowSensitive/SmartPointerAccessorCaching.cpp

@@ -71,7 +71,8 @@ bool hasSmartPointerClassShape(const CXXRecordDecl &RD, bool &HasGet,
                                 ->getCanonicalTypeUnqualified();
         }
       }
-    }
+   }
+       break;
     default:
       break;
     }