umlAutostartDomain: avoid NULL-deref upon virGetLastError failure

* src/uml/uml_driver.c (umlAutostartDomain): Handle a NULL return
from virGetLastError.

diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 63fe808d0974588699cbdec07e58e0b929dea906..ffb87c8b511020a1f9e0aedc90cfa0020f663196 100644 (file)
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -157,7 +157,7 @@ umlAutostartDomain(void *payload, const char *name ATTRIBUTE_UNUSED, void *opaqu
         if (umlStartVMDaemon(data->conn, data->driver, vm) < 0) {
             virErrorPtr err = virGetLastError();
             VIR_ERROR(_("Failed to autostart VM '%s': %s"),
-                      vm->def->name, err->message);
+                      vm->def->name, err ? err->message : "");
         }
     }
     virDomainObjUnlock(vm);