Prevent alloc errors from crashing in `list_t`

This commit changes the `list_t` api so that alloc errors can be
detected and worked around. Also fixes errors not found in 5cc7342

1 files changed, 4 insertions, 1 deletions

diff --git a/backend/libinput/events.c b/backend/libinput/events.c
index dc5e4cb1..2a396536 100644
--- a/backend/libinput/events.c
+++ b/backend/libinput/events.c
@@ -44,11 +44,14 @@ static struct wlr_input_device *allocate_device(
 		return NULL;
 	}
 	struct wlr_input_device *wlr_dev = &wlr_libinput_dev->wlr_input_device;
+	if (list_add(wlr_devices, wlr_dev) == -1) {
+		free(wlr_libinput_dev);
+		return NULL;
+	}
 	wlr_libinput_dev->handle = libinput_dev;
 	libinput_device_ref(libinput_dev);
 	wlr_input_device_init(wlr_dev, type, &input_device_impl,
 			name, vendor, product);
-	list_add(wlr_devices, wlr_dev);
 	return wlr_dev;
 }