stream/config: optimize stream config structure layout

src/stream-tcp.h

@@ -58,13 +58,13 @@ typedef struct TcpStreamCnf_ {
     uint32_t prealloc_segments; /**< segments to prealloc per stream thread */
     bool midstream;
     bool async_oneside;
+    bool streaming_log_api;
+
     uint32_t reassembly_depth;  /**< Depth until when we reassemble the stream */
 
     uint16_t reassembly_toserver_chunk_size;
     uint16_t reassembly_toclient_chunk_size;
 
-    bool streaming_log_api;
-
     enum ExceptionPolicy ssn_memcap_policy;
     enum ExceptionPolicy reassembly_memcap_policy;
     enum ExceptionPolicy midstream_policy;