fix crash when init fails early (i.e. due to vbox not being installed)

ChangeLog

+Fri May  8 12:09:12 CEST 2009 Guido Günther <agx@sigxcpu.org>
+
+	* src/vbox/vbox_tmpl.c (vboxUninitialize): fix crash when init fails
+	  early (i.e. due to vbox not being installed)
+
 Fri May  8 11:10:22 BST 2009 Daniel P. Berrange <berrange@redhat.com>
 
 	* src/qemu_driver.c: Make name & UUID uniqueness checking in

src/vbox/vbox_tmpl.c

@@ -291,7 +291,8 @@ static int vboxExtractVersion(virConnectPtr conn, vboxGlobalData *data) {
 }
 
 static void vboxUninitialize(vboxGlobalData *data) {
-    data->pFuncs->pfnComUninitialize();
+    if (data->pFuncs)
+        data->pFuncs->pfnComUninitialize();
     VBoxCGlueTerm();
 
     if (!data)