fix: unsubscribe from listening to refresh token

src/services/token-refresh.service.ts

@@ -26,23 +26,21 @@ export class TokenRefreshService {
   }
 
   private refreshToken(): void {
-    if (this.tokenRefreshing$.value) {
+    if (this.tokenRefreshing$.value)
       return;
-    }
 
     this.tokenRefreshing$.next(true);
 
     this.authService.refreshToken()
       .pipe(
-        catchError(error => {
+        catchError(_ => {
           localStorage.removeItem(ApiService.tokenKey);
           this.refreshTokenExpireMs = -1;
           return of(undefined);
         }))
       .subscribe(data => {
-        if (data) {
+        if (data)
           this.setRefreshTokenExpireMs(data);
-        }
         this.tokenRefreshing$.next(false);
       });
   }