Workarounds for crashes at engine startup

These are likely related to refcounting issues.
The change in the SConstruct script fixes a crash that occured somewhere in `bind_get_argument_type` when registering classes and binding methods.
Commenting out the `delete`s in destructors fixed a `double free or corruption` crash that occured after the fix described above.

Likely related to godotengine/godot-cpp#652, but neither godotengine/godot-cpp#660 or godotengine/godot-cpp#662 seemed to help...

SConstruct

@@ -86,6 +86,9 @@ subprocess.call(
 
 env.Append(CXXFLAGS=['-std=c++17'])
 
+if env["target"] == "debug":
+    env.Append(CPPDEFINES=["DEBUG_ENABLED", "DEBUG_METHODS_ENABLED"])
+
 # Check our platform specifics
 if env['platform'] == "osx":
     env['target_path'] += 'osx/'

src/geodata.cpp

@@ -9,7 +9,7 @@
 namespace godot {
 
 GeoDataset::~GeoDataset() {
-    delete dataset;
+    // delete dataset;
 }
 
 void GeoDataset::_bind_methods() {
@@ -201,7 +201,7 @@ void GeoFeatureLayer::set_native_layer(NativeLayer *new_layer) {
 }
 
 GeoRasterLayer::~GeoRasterLayer() {
-    delete dataset;
+    // delete dataset;
 }
 
 void GeoRasterLayer::_bind_methods() {

src/geoimage.cpp

@@ -7,7 +7,7 @@ using namespace godot;
 // Geodot::GeoImage
 
 GeoImage::~GeoImage() {
-    delete raster;
+    // delete raster;
 }
 
 void GeoImage::_bind_methods() {

src/vector-extractor/VectorExtractor.cpp

@@ -300,15 +300,13 @@ std::list<LineFeature *> NativeLayer::crop_lines_to_square(const char *path, dou
     return list;
 }
 
-NativeDataset::~NativeDataset() {}
-
 NativeDataset *NativeDataset::get_subdataset(const char *name) {
     // TODO: Hardcoded for the way GeoPackages work - do we want to support others too?
-    return new NativeDataset(("GPKG:" + path + ":" + std::string(name)).c_str());
+    return new NativeDataset(("GPKG:" + std::string(path) + ":" + std::string(name)).c_str());
 }
 
 NativeDataset *NativeDataset::clone() {
-    return new NativeDataset(path.c_str());
+    return new NativeDataset(path);
 }
 
 bool NativeDataset::is_valid() const {

src/vector-extractor/VectorExtractor.h

@@ -17,7 +17,7 @@ class GDALDataset;
 class NativeDataset {
   public:
     NativeDataset(const char *path);
-    ~NativeDataset();
+    ~NativeDataset() = default;
 
     /// Return the names of all feature layers as std::strings.
     std::vector<std::string> get_feature_layer_names();
@@ -31,7 +31,7 @@ class NativeDataset {
 
     bool is_valid() const;
 
-    std::string path;
+    const char *path;
 
     GDALDataset *dataset;
 };