message: Typo: Fix stack overflow
diff: @@ -41,7 +41,7 @@ fn __sys_acquire_putchar_lock() {
  #[no_mangle]
  pub extern "C" fn sys_acquire_putchar_lock() {
  - kernel_function!(sys_acquire_putchar_lock())
  + kernel_function!(__sys_acquire_putchar_lock())
  }
  fn __sys_putchar(character: u8) {
  