Fix sub_8099A5C sub_8099AFC weirdness

include/structs/str_3000400.h

@@ -0,0 +1,11 @@
+#ifndef GUARD_STR_3000400_H
+#define GUARD_STR_3000400_H
+
+// TODO: Figure out if this is, in fact, the RGB struct. code_80035F0.s will tell us more once decompiled.
+typedef struct unkStruct_3000400
+{
+    // size: 0x4
+    u8 unk0[0x4];
+} unkStruct_3000400;
+
+#endif // GUARD_STR_3000400_H