fix silly error

Author: dibarbet

test/vscodeLauncher.ts

@@ -70,15 +70,21 @@ export async function prepareVSCodeAndExecuteTests(
 async function installExtensions(extensionIds: string[], vscodeCli: string, vscodeArgs: string[]): Promise<void> {
     for (const extensionId of extensionIds) {
         // Workaround for https://github.com/microsoft/vscode/issues/256031 to retry installing the extension with a delay.
+        let installError: any | undefined = undefined;
         for (let attempts = 0; attempts < 5; attempts++) {
             try {
                 await installExtension(extensionId, vscodeCli, vscodeArgs);
-                return;
+                break;
             } catch (error) {
                 console.warn(`Failed to install extension ${extensionId}; retrying: ${error}`);
+                installError = error;
                 await new Promise((resolve) => setTimeout(resolve, 2000));
             }
         }
+
+        if (installError) {
+            throw installError;
+        }
     }
 
     console.log();