bpf_filter: remove unnecessary memset(), add a comment.
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020a6ad2d4
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@ -1,4 +1,4 @@
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/* $NetBSD: bpf_filter.c,v 1.51 2012/08/01 23:24:29 rmind Exp $ */
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/* $NetBSD: bpf_filter.c,v 1.52 2012/08/02 20:13:24 rmind Exp $ */
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/*-
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* Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
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@ -37,7 +37,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: bpf_filter.c,v 1.51 2012/08/01 23:24:29 rmind Exp $");
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__KERNEL_RCSID(0, "$NetBSD: bpf_filter.c,v 1.52 2012/08/02 20:13:24 rmind Exp $");
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#if 0
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#if !(defined(lint) || defined(KERNEL))
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@ -149,7 +149,10 @@ bpf_filter(const struct bpf_insn *pc, const u_char *p, u_int wirelen,
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return (u_int)-1;
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}
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memset(mem, 0, sizeof(mem));
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/*
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* Note: safe to leave memwords uninitialised, as the validation
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* step ensures that it will not be read, if it was not written.
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*/
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A = 0;
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X = 0;
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--pc;
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