- Release the guarded mutex before we return

svn path=/trunk/; revision=37124

reactos/ntoskrnl/io/pnpmgr/pnpnotify.c

@@ -96,6 +96,7 @@ IopNotifyPlugPlayNotification(
 		default:
 		{
 			DPRINT1("IopNotifyPlugPlayNotification(): unknown EventCategory 0x%x UNIMPLEMENTED\n", EventCategory);
+			KeReleaseGuardedMutex(&PnpNotifyListLock);
 			return;
 		}
 	}