[libvirt] [PATCH] node_device: Check return value for udev_new()

[Marc Hartmayer]

The comment was actually wrong as
https://www.freedesktop.org/software/systemd/man/udev_new.html
mentions that on failure NULL is returned.

Signed-off-by: Marc Hartmayer <mhartmay at linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk at linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy at linux.vnet.ibm.com>
---
 src/node_device/node_device_udev.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 4b81312..4b0a875 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1491,13 +1491,11 @@ static int nodeStateInitialize(bool privileged,
     if (udevPCITranslateInit(privileged) < 0)
         goto cleanup;
 
-    /*
-     * http://www.kernel.org/pub/linux/utils/kernel/hotplug/libudev/libudev-udev.html#udev-new
-     *
-     * indicates no return value other than success, so we don't check
-     * its return value.
-     */
     udev = udev_new();
+    if (!udev) {
+        virReportOOMError();
+        goto cleanup;
+    }
 #if HAVE_UDEV_LOGGING
     /* cast to get rid of missing-format-attribute warning */
     udev_set_log_fn(udev, (udevLogFunctionPtr) udevLogFunction);
-- 
2.5.5