[keel,nostalgia/tools,studio] Convert some pointers to references

src/nostalgia/tools/pack.cpp

@@ -44,7 +44,7 @@ static ox::Result<ox::Buffer> readFileBuff(ox::StringView path) noexcept {
 static ox::Error generateTypes(ox::TypeStore *ts) noexcept {
 	for (const auto mod : keel::modules()) {
 		for (auto gen : mod->types()) {
-			oxReturnError(gen(ts));
+			oxReturnError(gen(*ts));
 		}
 	}
 	return {};