fix shellcheck errors

Signed-off-by: Ashley Cui <acui@redhat.com>

tests/integration/delete.bats

@@ -60,9 +60,9 @@ function teardown() {
   update_config '.linux.namespaces += [{"type": "cgroup"}]'
 
   local subsystems="memory freezer"
-
+  # shellcheck disable=SC2034
   for i in $(seq 1); do
-    runc run -d --console-socket $CONSOLE_SOCKET test_busybox
+    runc run -d --console-socket "$CONSOLE_SOCKET" test_busybox
     [ "$status" -eq 0 ]
 
     testcontainer test_busybox running
@@ -89,9 +89,10 @@ EOF
 
     for s in ${subsystems}; do
       name=CGROUP_${s^^}
-      eval path=\$${name}/foo
-      echo $path
-      [ -d ${path} ] || fail "test failed to create memory sub-cgroup"
+      eval path=\$"${name}"/foo
+      # shellcheck disable=SC2154
+      echo "$path"
+      [ -d "${path}" ] || fail "test failed to create memory sub-cgroup"
     done
 
     runc delete --force test_busybox