work around bogus compiler warnings

Change-Id: I9170e4de857c1f3e003a480b12dd16fe796ec763
diff --git a/daemon/main.c b/daemon/main.c
index 863b8b4..a408df4 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -378,7 +378,7 @@
 	const char *cmd, *user;
 	char **addl_env = NULL;
 	sigset_t oldmask;
-	int nsfd, rc;
+	int nsfd = -1, rc;
 
 	juser = json_object_get(sprog, "run_as_user");
 	jcmd = json_object_get(sprog, "command");