fix #2

Author: Ubuntu

secure_tunneling/source/SecureTunnel.cpp

@@ -768,6 +768,7 @@ namespace Aws
                         payload_buf.allocator = NULL;
                         payload_buf.buffer = message->payload->ptr;
                         payload_buf.len = message->payload->len;
+                        payload_buf.capacity = message->payload->len;
                         secureTunnel->m_OnDataReceive(payload_buf);
                         return;
                     }