Initialize m_HttpResponseCode to fix clang-tidy uninitialized field warning

Author: thevar1able

generated/src/aws-cpp-sdk-s3/include/aws/s3/model/AbortMultipartUploadResult.h

@@ -61,7 +61,7 @@ class AbortMultipartUploadResult {
   RequestCharged m_requestCharged{RequestCharged::NOT_SET};
 
   Aws::String m_requestId;
-  Aws::Http::HttpResponseCode m_HttpResponseCode;
+  Aws::Http::HttpResponseCode m_HttpResponseCode{};
   bool m_requestChargedHasBeenSet = false;
   bool m_requestIdHasBeenSet = false;
 };