Fix error with non existing close on adapter

meta.json

@@ -1,6 +1,6 @@
 {
    "name": "logging",
-   "version": "3.0.5",
+   "version": "3.0.6",
    "description": "",
    "author": "Fabian Stamm <dev@fabianstamm.de>",
    "contributors": [],

package.json

@@ -1,6 +1,6 @@
 {
    "name": "@hibas123/logging",
-   "version": "3.0.5",
+   "version": "3.0.6",
    "description": "",
    "main": "out/index.js",
    "types": "out/index.d.ts",

src/base.ts

@@ -373,19 +373,19 @@ export class LoggingBase extends LoggingInterface {
       if (this.#closed) return;
       this.#closed = true;
 
-      this.#adapters.forEach((adapter) => {
+      for (const adapter of this.#adapters) {
          const cnt = LoggingBase[InitialisedAdapters].get(adapter);
          if (!cnt) {
             //TODO: should not happen!
          } else {
             if (cnt <= 1) {
-               adapter.close();
+               if (adapter.close) await adapter.close();
                LoggingBase[InitialisedAdapters].delete(adapter);
             } else {
                LoggingBase[InitialisedAdapters].set(adapter, cnt - 1);
             }
          }
-      });
+      }
    }
 }