fixes

Author: sbiscigl

include/aws/crt/http/HttpConnection.h

@@ -226,7 +226,7 @@ namespace Aws
 
                 int WriteData(
                     std::shared_ptr<Aws::Crt::Io::InputStream> stream,
-                    OnWriteDataComplete &onComplete,
+                    const OnWriteDataComplete &onComplete,
                     bool endStream = false) noexcept;
 
               private:

source/http/HttpConnection.cpp

@@ -379,7 +379,7 @@ namespace Aws
 
             int HttpClientStream::WriteData(
                 std::shared_ptr<Aws::Crt::Io::InputStream> stream,
-                OnWriteDataComplete &onComplete,
+                const OnWriteDataComplete &onComplete,
                 bool endStream) noexcept
             {
                 aws_http_stream_write_data_options options{};
@@ -390,7 +390,7 @@ namespace Aws
                 OnWriteUserData data{};
                 data.callback = onComplete;
                 data.callbackData = m_callbackData;
-                options.user_data = &onComplete;
+                options.user_data = &data;
 
                 return aws_http_stream_write_data(m_stream, &options);
             }