fix build

Signed-off-by: fufesou <shuanglongchen@yeah.net>

src/keyboard.rs

@@ -362,6 +362,7 @@ pub fn event_to_key_event(event: &Event, lock_modes: Option<i32>) -> Option<KeyE
         }
     };
     if let Some(lock_modes) = lock_modes {
+        #[cfg(not(any(target_os = "android", target_os = "ios")))]
         add_numlock_capslock_with_lock_modes(&mut key_event, lock_modes);
     } else {
         #[cfg(not(any(target_os = "android", target_os = "ios")))]