Update vsftpd-rel: use mktemp

Use mktemp instead tempfile, as tempfile is deprecated.

plugins/ftp/vsftpd-rel

@@ -36,7 +36,7 @@ PIVOT=${MUNIN_PLUGSTATE}/${PROGNAME}.pivot
 
 install_ok()
 {
-    tempfile=$(which tempfile)
+    tempfile=$(which mktemp)
     if [ ! -r ${LOGFILE} -o \
 	 -z "${LOGTAIL}" -o ! -x "${LOGTAIL}" -o \
 	 -z "${tempfile}" -o ! -x "${tempfile}" ]
@@ -49,7 +49,7 @@ install_ok()
 
 if [ "$1" = "autoconf" ]
 then
-    tmpfile=`which tempfile`
+    tmpfile=`which mktemp`
     if install_ok
     then
 	echo yes
@@ -81,7 +81,7 @@ fi
 test install_ok || exit 1
 
 touch -d now-5minutes+30seconds $PIVOT
-TEMP=`tempfile`
+TEMP=`mktemp`
 trap "rm -f ${PIVOT} ${TEMP}" INT EXIT
 
 test -n "$TEMP" -a -w "$TEMP" || exit 1