libudev: add missing errno initialization/error propagation (#6781)

In libudev (which es much older code than the rest of systemd), we
propagate errors in functions not returning an int, via (positive) errno
(i.e. libc-style), and as negative Exyz values in those returning an int
(much preferred, i.e. Linux kernel style). Let's fix up a few place,
where this was incorrectly done, or not done at all.

Fixes: #6613

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libudev/libudev.c b/src/libudev/libudev.c
index d7b82a758f..ce8d5b5760 100644
--- a/src/libudev/libudev.c
+++ b/src/libudev/libudev.c
@@ -97,7 +97,7 @@ _public_ struct udev *udev_new(void) {
 
         udev = new0(struct udev, 1);
         if (!udev) {
-                errno = -ENOMEM;
+                errno = ENOMEM;
                 return NULL;
         }
         udev->refcount = 1;