Fix crash when loading vertex colors from a .obj file

dist/preview release/what's new.md

@@ -227,6 +227,7 @@
 - Fixed `DracoCompression` to not load empty data into attributes ([bghgary](https://github.com/bghgary))
 - Fixed `Mesh.subdivide` where one face could be lost depending on the number of subdivision ([Popov72](https://github.com/Popov72))
 - Fixed `AssetContainer.instantiateModelsToScene` with cloneMaterials=true and MultiMaterials to properly set the cloned submaterials ([ghempton](https://github.com/ghempton))
+- Fix crash when loading a .obj file with vertex colors ([Popov72](https://github.com/Popov72))
 
 ## Breaking changes
 

loaders/src/OBJ/objFileLoader.ts

@@ -449,10 +449,10 @@ export class OBJFileLoader implements ISceneLoaderPluginAsync, ISceneLoaderPlugi
                 unwrappedPositionsForBabylon.push(wrappedPositionForBabylon[l].x, wrappedPositionForBabylon[l].y, wrappedPositionForBabylon[l].z);
                 unwrappedNormalsForBabylon.push(wrappedNormalsForBabylon[l].x, wrappedNormalsForBabylon[l].y, wrappedNormalsForBabylon[l].z);
                 unwrappedUVForBabylon.push(wrappedUvsForBabylon[l].x, wrappedUvsForBabylon[l].y); //z is an optional value not supported by BABYLON
-            }
-            if (this._meshLoadOptions.ImportVertexColors === true) {
-                //Push the r, g, b, a values of each element in the unwrapped array
-                unwrappedColorsForBabylon.push(wrappedColorsForBabylon[l].r, wrappedColorsForBabylon[l].g, wrappedColorsForBabylon[l].b, wrappedColorsForBabylon[l].a);
+                if (this._meshLoadOptions.ImportVertexColors === true) {
+                    //Push the r, g, b, a values of each element in the unwrapped array
+                    unwrappedColorsForBabylon.push(wrappedColorsForBabylon[l].r, wrappedColorsForBabylon[l].g, wrappedColorsForBabylon[l].b, wrappedColorsForBabylon[l].a);
+                }
             }
             // Reset arrays for the next new meshes
             wrappedPositionForBabylon = [];