Fix: Access container memory_stats.stats safely by optional chaining (#2271) (#2272)

src/widgets/docker/stats-helpers.js

@@ -13,6 +13,6 @@ export function calculateCPUPercent(stats) {
 export function calculateUsedMemory(stats) {
   // see https://github.com/docker/cli/blob/dcc161076861177b5eef6cb321722520db3184e7/cli/command/container/stats_helpers.go#L239
   return (
-    stats.memory_stats.usage - (stats.memory_stats.total_inactive_file ?? stats.memory_stats.stats.inactive_file ?? 0)
+    stats.memory_stats.usage - (stats.memory_stats.total_inactive_file ?? stats.memory_stats.stats?.inactive_file ?? 0)
   );
 }