Some initial parse output. Enforce handling of optionals. Fix issue where constants were folded despite the fact that they shouldn't be. Fix bug related to return foo() where foo() returns void!. (#893)

lib/std/collections/object.c3

@@ -141,7 +141,7 @@ fn void Object.free(&self)
 			{
 				foreach (key : self.map.key_tlist())
 				{
-					self.map.get(key).free();
+					(void)self.map.get(key).free();
 					free(key, .using = self.allocator);
 				}
 				self.map.free();
@@ -197,7 +197,7 @@ fn void Object.set_object(&self, String key, Object* new_object) @private
 	defer
 	{
 		(void)free(entry.key, .using = self.allocator);
-		entry.value.free();
+		(void)entry.value.free();
 	}
 	self.map.set(key.copy(self.map.allocator), new_object);
 }