Blame tmux-fix-malloc-check-error.patch

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--- cmd.c-orig	2014-02-26 09:57:06.441154327 -0300
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+++ cmd.c	2014-02-26 09:58:00.631888951 -0300
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@@ -138,6 +138,9 @@
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 	size_t	arglen;
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 	int	i;
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+	if (argc == 0)
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+		return (0);
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+
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 	*buf = '\0';
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 	for (i = 0; i < argc; i++) {
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 		if (strlcpy(buf, argv[i], len) >= len)