Change printargs_lu and printargs_ld to return RVAL_DECODED

* syscall.c (printargs_lu, printargs_ld): Return RVAL_DECODED.
diff --git a/syscall.c b/syscall.c
index 8e63db9..a21fd71 100644
--- a/syscall.c
+++ b/syscall.c
@@ -645,25 +645,21 @@
 int
 printargs_lu(struct tcb *tcp)
 {
-	if (entering(tcp)) {
-		int i;
-		int n = tcp->s_ent->nargs;
-		for (i = 0; i < n; i++)
-			tprintf("%s%lu", i ? ", " : "", tcp->u_arg[i]);
-	}
-	return 0;
+	const int n = tcp->s_ent->nargs;
+	int i;
+	for (i = 0; i < n; ++i)
+		tprintf("%s%lu", i ? ", " : "", tcp->u_arg[i]);
+	return RVAL_DECODED;
 }
 
 int
 printargs_ld(struct tcb *tcp)
 {
-	if (entering(tcp)) {
-		int i;
-		int n = tcp->s_ent->nargs;
-		for (i = 0; i < n; i++)
-			tprintf("%s%ld", i ? ", " : "", tcp->u_arg[i]);
-	}
-	return 0;
+	const int n = tcp->s_ent->nargs;
+	int i;
+	for (i = 0; i < n; ++i)
+		tprintf("%s%ld", i ? ", " : "", tcp->u_arg[i]);
+	return RVAL_DECODED;
 }
 
 static void