Fix portable mode on macOS (#552)

src/main/support.cpp

@@ -25,9 +25,7 @@ namespace zelda64 {
     std::filesystem::path get_asset_path(const char* asset) {
         std::filesystem::path base_path = "";
 #if defined(__APPLE__)
-        const char* resource_dir = get_bundle_resource_directory();
-        base_path = resource_dir;
-        free((void*)resource_dir);
+        base_path = get_bundle_resource_directory();
 #endif
 
         return base_path / "assets" / asset;

src/main/support_apple.mm

@@ -12,9 +12,14 @@ namespace zelda64 {
         });
     }
 
-    const char* get_bundle_resource_directory() {
+    std::filesystem::path get_bundle_resource_directory() {
         NSString *bundlePath = [[NSBundle mainBundle] resourcePath];
-        return strdup([bundlePath UTF8String]);
+        return std::filesystem::path([bundlePath UTF8String]);
+    }
+
+    std::filesystem::path get_bundle_directory() {
+        NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
+        return std::filesystem::path([bundlePath UTF8String]);
     }
 }