[SI-2250] sonra budfixes

Signed-off-by: Peter Buschmann <peter.buschmann@pta.de>

projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts

diff --git a/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts b/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
index 0484516..5aa749a 100644
--- a/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
+++ b/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
@@ -1,4 +1,3 @@
-import { ConfigService } from '@grid-failure-information-app/app/app-config.service';
 /********************************************************************************
  * Copyright (c) 2020 Contributors to the Eclipse Foundation
  *
@@ -11,6 +10,7 @@
  *
  * SPDX-License-Identifier: EPL-2.0
  ********************************************************************************/
+import { ConfigService } from '@grid-failure-information-app/app/app-config.service';
 import { Injectable } from '@angular/core';
 import { Router } from '@angular/router';
 import { SafetyQueryDialogComponent } from '@grid-failure-information-app/shared/components/dialogs/safety-query-dialog/safety-query-dialog.component';
@@ -87,17 +87,26 @@
 
   public addressCommunities$: Observable<Array<string>> = this.actionsSubject.pipe(
     ofType(gridFailureActions.loadAllAddressCommunitiesSuccess),
-    map(action => action.payload.sort()),
+    map(action => {
+      const stringArray = action.payload;
+      return stringArray.sort();
+    }),
     takeUntil(this._endSubscriptions$)
   );
   public addressDistricts$: Observable<Array<string>> = this.actionsSubject.pipe(
     ofType(gridFailureActions.loadAddressDistrictsOfCommunitySuccess),
-    map(action => action.payload.sort()),
+    map(action => {
+      const stringArray = action.payload;
+      return stringArray.sort();
+    }),
     takeUntil(this._endSubscriptions$)
   );
   public addressStreets$: Observable<Array<string>> = this.actionsSubject.pipe(
     ofType(gridFailureActions.loadAddressStreetsSuccess),
-    map(action => action.payload.sort()),
+    map(action => {
+      const stringArray = action.payload;
+      return stringArray.sort();
+    }),
     takeUntil(this._endSubscriptions$)
   );
   public addressHouseNumbers$: Observable<Array<string>> = this.actionsSubject.pipe(
@@ -109,7 +118,10 @@
 
   public addressPostCodes$: Observable<Array<string>> = this.actionsSubject.pipe(
     ofType(gridFailureActions.loadAddressPostalcodesSuccess),
-    map(action => action.payload.sort(sortAlphaNum)),
+    map(action => {
+      const stringArray = action.payload;
+      return stringArray.sort(sortAlphaNum);
+    }),
     takeUntil(this._endSubscriptions$)
   );
   public addressHouseNumbers: Array<models.FailureHousenumber>;
@@ -395,7 +407,10 @@
         takeUntil(this._endSubscriptions$)
       )
       .subscribe(hnr => {
-        this.addressHouseNumbers = hnr.length >= 0 && hnr.sort(sortAlphaNum);
+        if (hnr.length > 0) {
+          hnr.sort(sortAlphaNum);
+          this.addressHouseNumbers = hnr;
+        }
       });
 
     this.gridFailureDetailsFormState$.pipe(takeUntil(this._endSubscriptions$)).subscribe((formState: FormGroupState<models.GridFailure>) => {