[libvirt] [PATCH 2/4] virhook: Resolve Coverity NULL_RETURNS

[John Ferlan]

Coverity complains that many other callers to return err from
virGetLastError() will check if err is not NULL before dereferencing
it.  Just do the same here for safety.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/util/virhook.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/util/virhook.c b/src/util/virhook.c
index 25d0783..ee19382 100644
--- a/src/util/virhook.c
+++ b/src/util/virhook.c
@@ -300,7 +300,8 @@ virHookCall(int driver,
     if (ret < 0) {
         /* Convert INTERNAL_ERROR into known error.  */
         virErrorPtr err = virGetLastError();
-        virReportError(VIR_ERR_HOOK_SCRIPT_FAILED, "%s", err->message);
+        virReportError(VIR_ERR_HOOK_SCRIPT_FAILED, "%s",
+                       err ? err->message : _("unknown error"));
     }
 
     virCommandFree(cmd);
-- 
1.9.3