uinput: don't try to set the syspath twice

If we have it, stop searching for it. Otherwise a second device with the
same name would overwrite the first, causing a leak.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>

libevdev/libevdev-uinput.c

@@ -230,6 +230,7 @@ fetch_syspath_and_devnode(struct libevdev_uinput *uinput_dev)
 			strcat(buf, namelist[i]->d_name);
 			uinput_dev->syspath = strdup(buf);
 			uinput_dev->devnode = fetch_device_node(buf);
+			break;
 		}
 	}