Fixed incorrect vector reserve when auto recording.

src/client/component/demo_recording.cpp

@@ -326,7 +326,8 @@ namespace // demo class
 		// store gamestate for user file
 		write_network_data(crit_data_, network_data);
 
-		// reserve memory (low size if auto recording is enabled, because then the demo writes almost directly to disk)
+		// reserve memory; use smaller buffer size when auto recording is enabled,
+		// since the data is written to disk almost right away.
 		const auto reserve_size = (demo_autorecord && demo_autorecord->current.enabled) ? 8192 : 1024 * 1024;
 		auto_buffer_.reserve_memory(reserve_size);