Fix mkdir-rename-rmdir test script

The current script gets stuck in an infinite loop when the test
suite is started with 1 mount point. This is due to the advancement
part of the script in which it advances the ops for each mount.
The current while loop checks for when the op_mnt wraps by checking if
it equals 0. But the problem is we set each of the op_mnts to 0 during
the advancement, so when it wraps it still equates to 0, so it is an
infinite loop. Therefore, the fix is to check at the end of the loop
check if the last op's mount number wrapped. If so just break out.

Signed-off-by: Bryant Duffy-Ly <bduffyly@versity.com>

tests/tests/mkdir-rename-rmdir.sh

@@ -23,9 +23,7 @@ else
 	NR_MNTS=$T_NR_MOUNTS
 fi
 
-# test until final op mount dir wraps
-while [ ${op_mnt[$NR_OPS]} == 0 ]; do
-
+while : ; do
 	# sequentially perform each op from its mount dir
 	for op in $(seq 0 $((NR_OPS - 1))); do
 		m=${op_mnt[$op]}
@@ -45,7 +43,7 @@ while [ ${op_mnt[$NR_OPS]} == 0 ]; do
 
 	# advance through mnt nrs for each op
 	i=0
-	while [ ${op_mnt[$NR_OPS]} == 0 ]; do
+	while [ $i -lt $NR_OPS ]; do
 		((op_mnt[$i]++))
 		if [ ${op_mnt[$i]} -ge $NR_MNTS ]; then
 			op_mnt[$i]=0
@@ -54,6 +52,9 @@ while [ ${op_mnt[$NR_OPS]} == 0 ]; do
 			break
 		fi
 	done
+
+	# done when the last op's mnt nr wrapped
+	[ $i -ge $NR_OPS ] && break
 done
 
 t_pass