Fix most compiler warnings in the boot and code segments (#674)

* Less warnings in boot & code segments

* few more warnings gone

* Ran formatter

* z_view warning gone

* -> 1

* f31 -> 31

* Remove function casts

* Few more small improvements

* Separate declaration and assignment in func_80091738 and Item_Give

Co-authored-by: Thar0 <maximilianc64@gmail.com>

src/code/sys_math3d.c

@@ -201,7 +201,7 @@ s32 Math3D_PlaneVsPlaneVsLineClosestPoint(f32 planeAA, f32 planeAB, f32 planeAC,
     static Linef planeIntersect;
 
     if (!Math3D_PlaneVsPlaneNewLine(planeAA, planeAB, planeAC, planeADist, planeBA, planeBB, planeBC, planeBDist,
-                                    &planeIntersect)) {
+                                    (InfiniteLine*)&planeIntersect)) {
         return false;
     }
     Math3D_LineClosestToPoint(&planeIntersect, point, closestPoint);