Fixes for DCE_RPC analyzer

- DCE_RPC fragmentation handling returns!
  - Fixed some general parsing issues
  - Fixed an issue with the DCE_RPC signature not working for IPv6 connections.

scripts/base/protocols/dce-rpc/main.bro

@@ -204,4 +204,4 @@ event connection_state_remove(c: connection)
 			Log::write(LOG, c$dce_rpc);
 			}
 		}
-	}
+	}