--- libelwix/src/vars.c	2013/08/21 16:08:51	1.4.20.2
+++ libelwix/src/vars.c	2013/08/22 08:48:08	1.4.20.3
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: vars.c,v 1.4.20.2 2013/08/21 16:08:51 misho Exp $
+* $Id: vars.c,v 1.4.20.3 2013/08/22 08:48:08 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -421,29 +421,28 @@ ait_freeVars(array_t ** __restrict vars)
  * ait_resideVars() - Calculate footprint of resided variables into array
  *
  * @vars = Variable array
- * return: -1 error or !=-1 bytes for whole array
+ * return: bytes for whole array
  */
-ssize_t
+size_t
 ait_resideVars(array_t * __restrict vars)
 {
-	ssize_t ret = 0;
+	size_t ret = 0;
 	register int i;
 
-	if (!vars)
-		return -1;
-
-	ret = array_Size(vars) * sizeof(ait_val_t);
-	for (i = 0; i < array_Size(vars); i++)
-		switch (AIT_TYPE(array(vars, i, ait_val_t*))) {
-			case buffer:
-			case string:
-			case data:
-			case ptr:
-				ret += AIT_LEN(array(vars, i, ait_val_t*));
-				break;
-			default:
-				break;
-		}
+	if (vars) {
+		ret = array_Size(vars) * sizeof(ait_val_t);
+		for (i = 0; i < array_Size(vars); i++)
+			switch (AIT_TYPE(array(vars, i, ait_val_t*))) {
+				case buffer:
+				case string:
+				case data:
+				case ptr:
+					ret += AIT_LEN(array(vars, i, ait_val_t*));
+					break;
+				default:
+					break;
+			}
+	}
 
 	return ret;
 }