Fixed incorrect vector reserve when auto recording.

src/client/component/demo_sv_recording.cpp

@@ -434,7 +434,7 @@ namespace // server demos class
 		auto& client = get_client(client_num);
 
 		// keep buffering data even when recording a demo so subsequent demos for the same client
-		// can be recorded using the entire buffer; demos require the entire buffer to be valid
+		// can be recorded using the entire buffer; the entire buffer is required for demos to be valid
 		if (client.is_buffer_active())
 		{
 			write_data_internal(client.buffer);