vscode : do nothing when goals are null, get focus back for goals pan…

…el before showing logs and goals

editors/vscode/src/client.ts

@@ -664,6 +664,15 @@ function sendGoalsRequest(position: Position, panel: WebviewPanel, docUri: Uri,
     let cursor = { textDocument: doc, position: position };
     const req = new RequestType<ParamsGoals, GoalResp, void>("proof/goals");
     client.sendRequest(req, cursor).then((goals) => {
+        // If uri is not a lambdapi/dedukti file, do nothing
+        if(goals.goals == null){
+            return;
+        }
+        // Take focus back if the goal panel lost it.
+        window.showErrorMessage("Going through Goals");
+        if(!panel.active) {
+            panel.reveal(2, false);
+        }
 
         updateTerminalText(goals.logs);