seems a minor logic error in UpdateCapsule of MdeModulePkg\Universal\CapsuleRuntimeDxe

["wang xiaofeng" <winggundum82@163.com>]

Hi All.
   In  UpdateCapsule of MdeModulePkg\Universal\CapsuleRuntimeDxe,TempVarName is initlized but not used. I guess the author tends to set 
TempVarName instead of  CapsuleVarName  if user calls UpdateCapsule multiple times. The two name are same for the first call .




StrCpyS (CapsuleVarName, sizeof(CapsuleVarName)/sizeof(CHAR16), EFI_CAPSULE_VARIABLE_NAME);
  TempVarName = CapsuleVarName + StrLen (CapsuleVarName);
  if (mTimes > 0) {
    UnicodeValueToString (TempVarName, 0, mTimes, 0);
  }


  //
  // ScatterGatherList is only referenced if the capsules are defined to persist across
  // system reset. Set its value into NV storage to let pre-boot driver to pick it up 
  // after coming through a system reset.
  //
  Status = EfiSetVariable (
             CapsuleVarName,
             &gEfiCapsuleVendorGuid,
             EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,
             sizeof (UINTN),
             (VOID *) &ScatterGatherList
             );



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