Doing multiple builds in a row would cause Visual Studio to OOM

ClearAllErrors was the only method calling this method and would never break out.

src/Microsoft.VisualStudio.ProjectSystem.Managed/ProjectSystem/LanguageServices/ActiveWorkspaceProjectContextHost.cs

@@ -43,6 +43,7 @@ public async Task OpenContextForWriteAsync(Func<IWorkspaceProjectContextAccessor
                 try
                 {
                     await _activeHost.Value.OpenContextForWriteAsync(action);
+                    return;
                 }
                 catch (ActiveProjectConfigurationChangedException)
                 {   // Host was unloaded because configuration changed, retry on new config