Don't allow len to go negative if the header is empty.

git-svn-id: svn+ssh://projects.linpro.no/svn/varnish/trunk@1531 d4fa192b-c00b-0410-8231-f00ffab90ce4

diff --git a/varnish-cache/bin/varnishncsa/varnishncsa.c b/varnish-cache/bin/varnishncsa/varnishncsa.c
index 926422927f13acafca69320d6dd0322cf7b5d3b9..68a891fec1105b213ff820c68597c16aa07aa61b 100644 (file)
--- a/varnish-cache/bin/varnishncsa/varnishncsa.c
+++ b/varnish-cache/bin/varnishncsa/varnishncsa.c
@@ -155,7 +155,7 @@ trimline(const char *str, const char *end)
                 /* nothing */ ;
 
        /* trim trailing space */
-       while (str[len - 1] == ' ')
+       while (len && str[len - 1] == ' ')
                --len;
 
        /* copy and return */