Add an error for implicit functions (#3017)

* Add the flag and fix errors

* switch assert and skin matrix

* new LUS

* Use normal assert

* hopefully fix WiiU

Signed-off-by: Louis <louist103@pop-os.localdomain>

---------

Signed-off-by: Louis <louist103@pop-os.localdomain>
Co-authored-by: Louis <louist103@pop-os.localdomain>
Co-authored-by: Christopher Leggett <chris@leggett.dev>

soh/src/code/z_player_lib.c

@@ -8,6 +8,8 @@
 
 #include "soh/Enhancements/game-interactor/GameInteractor.h"
 
+#include <stdlib.h>
+
 typedef struct {
     /* 0x00 */ u8 flag;
     /* 0x02 */ u16 textId;
@@ -1712,6 +1714,7 @@ s32 func_80091880(PlayState* play, s32 limbIndex, Gfx** dList, Vec3f* pos, Vec3s
 }
 
 #include <overlays/actors/ovl_Demo_Effect/z_demo_effect.h>
+void DemoEffect_DrawTriforceSpot(Actor* thisx, PlayState* play);
 
 void Pause_DrawTriforceSpot(PlayState* play, s32 showLightColumn) {
     static DemoEffect triforce;