modernize just enough

cb91e43a · Nils Goroll · 4bdfa56c · cb91e43a
Commit cb91e43a authored Dec 07, 2016 by Nils Goroll
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vtest.sh tools/vtest.sh +1 -1

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--- a/tools/vtest.sh
+++ b/tools/vtest.sh
@@ -130,7 +130,7 @@ i=0

 while [ $MAXRUNS -eq 0 ] || [ $i -lt $MAXRUNS ]
 do
-	i=`expr $i + 1`
+	i=$((i + 1))

 	(cd varnish-cache && git pull > /dev/null 2>&1 || true)
 	rev=`cd varnish-cache && git show -s --pretty=format:%H`