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_sram.c

@@ -8,6 +8,8 @@
 #define NUM_DUNGEONS 8
 #define NUM_COWS 10
 
+void Save_LoadFile(void);
+
 /**
  *  Initialize new save.
  *  This save has an empty inventory with 3 hearts and single magic.