svn commit: r292550 - head/lib/libc/net

[Hajimu UMEMOTO]

Author: ume
Date: Mon Dec 21 16:55:36 2015
New Revision: 292550
URL: https://svnweb.freebsd.org/changeset/base/292550

Log:
  Simplify _map_v4v6_address().
  
  Suggested by:	hrs
  MFC after:	1 week

Modified:
  head/lib/libc/net/map_v4v6.c

Modified: head/lib/libc/net/map_v4v6.c
==============================================================================
--- head/lib/libc/net/map_v4v6.c	Mon Dec 21 16:12:41 2015	(r292549)
+++ head/lib/libc/net/map_v4v6.c	Mon Dec 21 16:55:36 2015	(r292550)
@@ -78,19 +78,15 @@ typedef union {
 void
 _map_v4v6_address(const char *src, char *dst)
 {
-	u_char *p = (u_char *)dst;
 	char tmp[NS_INADDRSZ];
-	int i;
 
 	/* Stash a temporary copy so our caller can update in place. */
 	memcpy(tmp, src, NS_INADDRSZ);
 	/* Mark this ipv6 addr as a mapped ipv4. */
-	for (i = 0; i < 10; i++)
-		*p++ = 0x00;
-	*p++ = 0xff;
-	*p++ = 0xff;
+	memset(&dst[0], 0, 10);
+	memset(&dst[10], 0xff, 2);
 	/* Retrieve the saved copy and we're done. */
-	memcpy((void*)p, tmp, NS_INADDRSZ);
+	memcpy(&dst[12], tmp, NS_INADDRSZ);
 }
 
 void