Enable full IDO warnings (#781)

* Fix a lot of IDO warnings (and some Clang ones)

* Format

* Put FULL_DISASM=0 back

* Fix bss

src/code/z_actor.c

@@ -240,7 +240,7 @@ void ActorShadow_DrawFeet(Actor* actor, Lights* mapper, GlobalContext* globalCtx
                         }
                         actor->shape.unk_17 &= ~spB8;
 
-                        if (!mapper->l.l) {} // POSSIBLE FAKE MATCH
+                        if ((uintptr_t)mapper->l.l) {} // POSSIBLE FAKE MATCH
                     }
                 }