MAGETWO-71765: Impossible perform partial invoice for order placed with taxes and PayPal Payflow Pro

- Fixed code style.

Author: Michael Yu

app/code/Magento/Paypal/Test/Unit/Model/PayflowproTest.php

@@ -345,13 +345,12 @@ public function testCaptureAmountRounding($amount, $setAmount, $expectedResult)
         $this->gatewayMock->expects($this->once())
             ->method('postRequest')
             ->with(
-                $this->callback(function($request) use ($expectedResult)
-                {
+                $this->callback(function ($request) use ($expectedResult) {
                     return is_callable([$request, 'getAmt']) && $request->getAmt() == $expectedResult;
                 }
             ),
                 $this->isInstanceOf(PayflowConfig::class)
-            )
+                )
             ->willReturn($response);
 
         $this->payflowpro->capture($paymentMock, $amount);