util: event: check return value of virInitialize

This function can possibly fail.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 2e07a1e14635ad25c57b66c13488feff4c8d2b0c
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

src/util/virevent.c

@@ -305,7 +305,8 @@ int virEventRegisterDefaultImpl(void)
 {
     VIR_DEBUG("registering default event implementation");
 
-    virInitialize();
+    if (virInitialize() < 0)
+        return -1;
 
     virResetLastError();