zdtm: don't show a wrong path to log files

It showed old pathes.

Dump log   : /root/crtools/test/dump/inotify00/15673/dump.log
Restore log: /root/crtools/test/dump/inotify00/15673/restore.log
Output file: /root/crtools/test/zdtm/live/static/utsname.out
make: *** [test] Error 1
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -83,6 +83,7 @@ run_test()
 	local args=$*
 	local tname=`basename $test`
 	local tdir=`dirname $test`
+	DUMP_PATH=""
 
 	echo "Execute $test"
 
@@ -138,10 +139,12 @@ case_error()
 	echo "Test: $test"
 	echo "====================== ERROR ======================"
 
+	if [ -n "$DUMP_PATH" ]; then
 		[ -e "$DUMP_PATH/dump.log" ] &&
 			echo "Dump log   : $DUMP_PATH/dump.log"
 		[ -e "$DUMP_PATH/restore.log" ] &&
 			echo "Restore log: $DUMP_PATH/restore.log"
+	fi
 	[ -e "$test_log" ] &&
 		echo "Output file: $test_log"
 	exit 1