resetting shell on logout

src/shellmatta_auth.c

@@ -269,8 +269,8 @@ static shellmatta_retCode_t logoutCmdFct(const shellmatta_handle_t handle, const
     inst->userId = 0u;
     inst->userPointer = NULL;
 
-    /** reset history buffer */
-    history_reset(inst);
+    /** reset shell and with it the history buffer */
+    (void)shellmatta_resetShell(handle, false);
 
     shellmatta_write(handle, "good bye\r\n", 10);