Do not fail or print an error if the logfile already exists.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@9127 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

tests/seek_test.sh

@@ -7,7 +7,7 @@ logfile="$datadir/seek.regression"
 reffile="$1"
 
 list=`ls data/a-* data/b-* | sort`
-rm $logfile
+rm -f $logfile
 for i in $list ; do
     echo ---------------- >>$logfile
     echo $i >>$logfile