fixup! Add "Restart Phan Language Server" command

Author: Ben Merritt

src/extension.ts

@@ -432,11 +432,8 @@ export async function activate(context: vscode.ExtensionContext): Promise<void>
 
     const languageClients = analyzedProjectDirectories.map(createClient);
 
-    async function restartLanguageClients(): Promise<void> {
-        for (const client of languageClients) {
-            await client.stop();
-            context.subscriptions.push(client.start());
-        }
+    function restartLanguageClients() {
+        return Promise.all(languageClients.map((c: LanguageClient) => c.stop().then(() => c.start())));
     }
     context.subscriptions.push(vscode.commands.registerCommand('phan.restartLanguageServer', restartLanguageClients));