Disable agent forwarding when no agent is set

src/connect.ts

@@ -165,6 +165,10 @@ export async function calculateActualConfig(config: FileSystemConfig): Promise<F
     // Issue with the ssh2 dependency apparently not liking false
     delete config.passphrase;
   }
+  if (config.agentForward && !config.agent) {
+    logging.debug(`\tNo agent while having agentForward, disabling agent forwarding`);
+    config.agentForward = false;
+  }
   if (!config.privateKey && !config.agent && !config.password) {
     logging.debug(`\tNo privateKey, agent or password. Gonna prompt for password`);
     config.password = true as any;