PVS-Studio warning V519 for UnrealEngine4

static void VerifyUniformLayout(....)
{
  ....
  switch(Member.GetBaseType())
  {
    case UBMT_STRUCT:  BaseTypeName = TEXT("struct");
    case UBMT_BOOL:    BaseTypeName = TEXT("bool"); break;
    case UBMT_INT32:   BaseTypeName = TEXT("int"); break;
    case UBMT_UINT32:  BaseTypeName = TEXT("uint"); break;
    case UBMT_FLOAT32: BaseTypeName = TEXT("float"); break;
    default:
      UE_LOG(LogShaders, Fatal,
        TEXT("Unrecognized uniform buffer "
             "struct member base type."));
  };
  ....
}

This is what should have been written here: case UBMT_STRUCT:  BaseTypeName = TEXT("struct"); break;

This suspicious code was found in UnrealEngine4 project by PVS-Studio static code analyzer.
Warning message is:
V519 The 'BaseTypeName' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 862, 863. openglshaders.cpp 863

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