Finish save_failed_screen

include/save_failed_screen.h

@@ -2,7 +2,7 @@
 #define GUARD_SAVE_FAILED_SCREEN_H
 
 extern void DoSaveFailedScreen(u8 saveType); // save_failed_screen
-void sub_80F50F4(void);
-bool32 sub_80F5118(void);
+void SetNotInSaveFailedScreen(void);
+bool32 RunSaveFailedScreen(void);
 
 #endif //GUARD_SAVE_FAILED_SCREEN_H