dispose streams

backend/src/Designer/Controllers/ProcessModelingController.cs

@@ -59,7 +59,7 @@ public async Task<IActionResult> UpsertProcessDefinitionAndNotify(string org, st
 
             string developer = AuthenticationHelper.GetDeveloperUserName(HttpContext);
             var editingContext = AltinnRepoEditingContext.FromOrgRepoDeveloper(org, repo, developer);
-            
+
             await using Stream stream = content.OpenReadStream();
             try
             {

backend/src/Designer/Infrastructure/GitRepository/AltinnAppGitRepository.cs

@@ -815,17 +815,13 @@ public Stream GetProcessDefinitionFile()
 
         public Definitions GetDefinitions()
         {
-            Stream processDefinitionStream = GetProcessDefinitionFile();
-
-            MemoryStream memoryStream = new MemoryStream();
+            using Stream processDefinitionStream = GetProcessDefinitionFile();
+            using MemoryStream memoryStream = new MemoryStream();
             processDefinitionStream.CopyTo(memoryStream);
-
             memoryStream.Position = 0;
-    
+
             XmlSerializer serializer = new(typeof(Definitions));
             Definitions definitions = (Definitions)serializer.Deserialize(memoryStream);
-
-            processDefinitionStream.Close();
 
             return definitions;
         }