Incorrect error is being logged if `WaitForBlockCompletion` for commit fails.

[Yashk767]

Description

		waitForBlockCompletionErr := razorUtils.WaitForBlockCompletion(client, commitTxn.Hex())
		if waitForBlockCompletionErr != nil {
			log.Error("Error in WaitForBlockCompletion for commit: ", err)
			return errors.New("error in sending commit transaction")
		}

Here in the line log.Error("Error in WaitForBlockCompletion for commit: ", err) instead of err being logged, waitForBlockCompletionErr should be logged.