[hackers] [quark] Increase clarity of the len-check || FRIGN

[git]

commit 3962978bddbafdcfd94538887e5ce10c698e209a
Author: FRIGN <d...@frign.de>
Date:   Thu Aug 14 14:18:40 2014 +0200

    Increase clarity of the len-check

diff --git a/quark.c b/quark.c
index 4fb065d..c6fa799 100644
--- a/quark.c
+++ b/quark.c
@@ -273,7 +273,7 @@ responsedir(void) {
        size_t len = strlen(reqbuf);
        DIR *d;
 
-       if (len && (reqbuf[len - 1] != '/') && (len + 1 < MAXBUFLEN)) {
+       if (len > 0 && (reqbuf[len - 1] != '/') && (len + 1 < MAXBUFLEN)) {
                /* add directory terminator if necessary */
                reqbuf[len] = '/';
                reqbuf[len + 1] = 0;