src/jtag/hla: free allocated memory in hl_interface_quit()

Change-Id: If6ead00e47021c88e4c106b4aeaf038db87ff50b
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4413
Tested-by: jenkins

src/jtag/hla/hla_interface.c

@@ -119,6 +119,11 @@ static int hl_interface_quit(void)
 	if (hl_if.layout->api->close)
 		hl_if.layout->api->close(hl_if.handle);
 
+	jtag_command_queue_reset();
+
+	free((void *)hl_if.param.device_desc);
+	free((void *)hl_if.param.serial);
+
 	return ERROR_OK;
 }