Fix lint issue with method signature.

Author: daspecster

packages/google-cloud-error-reporting/unit_tests/test_client.py

@@ -107,8 +107,8 @@ def test_report_exception_wo_gax(self):
         self.assertIsNotNone(target.report_errors_api)
 
     @mock.patch('google.cloud.error_reporting.client.make_report_error_api')
-    def test_report_exception_with_service_version_in_constructor(self,
-                                                                  make_client):
+    def test_report_exception_with_service_version_in_constructor(
+            self, make_client):
         CREDENTIALS = _make_credentials()
         SERVICE = "notdefault"
         VERSION = "notdefaultversion"