--- libaitcrc/src/aitcrc.c	2012/07/04 14:46:33	1.4.2.3
+++ libaitcrc/src/aitcrc.c	2012/07/04 14:53:43	1.5
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: aitcrc.c,v 1.4.2.3 2012/07/04 14:46:33 misho Exp $
+* $Id: aitcrc.c,v 1.5 2012/07/04 14:53:43 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -141,10 +141,7 @@ crcCalc(u_char * __restrict psBuf, u_int bufLen, u_cha
 	u_int poly, crchibit, crc;
 	register u_int i, j, b, ch;
 
-	if (!psBuf) {
-		crc_SetErr(EINVAL, "Invalid parameters!");
-		return -1;
-	}
+	assert(psBuf);
 
 	switch (crcBits) {
 		case 1:
@@ -240,10 +237,7 @@ crcIP(u_char * __restrict buf, int bufLen)
 	register u_int sum;
 	u_short last = 0, *nBuf = (u_short*) buf;
 
-	if (!buf) {
-		crc_SetErr(EINVAL, "Invalid parameters!");
-		return -1;
-	}
+	assert(buf);
 
 	for (sum = 0; bufLen && bufLen > 1; bufLen -= 2)
 		sum += *nBuf++;
@@ -272,10 +266,7 @@ crcFletcher16(u_short * __restrict nBuf, int bufLen)
 	register u_short s1, s2;
 	register u_int clen;
 
-	if (!nBuf) {
-		crc_SetErr(EINVAL, "Invalid parameters!");
-		return -1;
-	}
+	assert(nBuf);
 
 	s1 = s2 = 0xFF;
 	while (bufLen) {
@@ -307,10 +298,7 @@ crcFletcher(u_short * __restrict nBuf, int bufLen)
 {
 	register u_int s1, s2, clen;
 
-	if (!nBuf) {
-		crc_SetErr(EINVAL, "Invalid parameters!");
-		return -1;
-	}
+	assert(nBuf);
 
 	s1 = s2 = 0xFFFF;
 	while (bufLen) {
@@ -342,10 +330,7 @@ crcAdler(u_char * __restrict psBuf, int bufLen)
 {
 	register u_int s1, s2, clen;
 
-	if (!psBuf) {
-		crc_SetErr(EINVAL, "Invalid parameters!");
-		return -1;
-	}
+	assert(psBuf);
 
 	s1 = 1L;
 	s2 ^= s2;