raylib: [models] MTL files fail to load automatically on Android

• I tested it on latest raylib version from master branch
• I checked there is no similar issue already reported
• My code has no errors or misuse of raylib

Issue description

The MTL files linked to an OBJ file fail to load automatically on Android when loading the OBJ file, whereas for the same example, it works on PC.

Android logs:

2023-06-28 15:05:28.324 22364-22505 raylib                  com.raylib.objmtltest                I  FILEIO: [suv.obj] Text file loaded successfully
2023-06-28 15:05:28.342 22364-22505 raylib                  com.raylib.objmtltest                I  MODEL: [suv.obj] OBJ data loaded successfully: 5 meshes/0 materials
2023-06-28 15:05:28.342 22364-22505 raylib                  com.raylib.objmtltest                I  MODEL: No materials, putting all meshes in a default material
2023-06-28 15:05:28.344 22364-22505 raylib                  com.raylib.objmtltest                I  VAO: [ID 2] Mesh uploaded successfully to VRAM (GPU)
2023-06-28 15:05:28.344 22364-22505 raylib                  com.raylib.objmtltest                W  MATERIAL: [suv.obj] Failed to load material data, default to white material

Desktop logs:

INFO: FILEIO: [suv.obj] Text file loaded successfully
INFO: MODEL: [suv.obj] OBJ data loaded successfully: 5 meshes/8 materials
INFO: MODEL: model has 8 material meshes
INFO: VAO: [ID 2] Mesh uploaded successfully to VRAM (GPU)
INFO: VAO: [ID 3] Mesh uploaded successfully to VRAM (GPU)
INFO: VAO: [ID 4] Mesh uploaded successfully to VRAM (GPU)
INFO: VAO: [ID 5] Mesh uploaded successfully to VRAM (GPU)
INFO: VAO: [ID 6] Mesh uploaded successfully to VRAM (GPU)
INFO: VAO: [ID 7] Mesh uploaded successfully to VRAM (GPU)
INFO: VAO: [ID 8] Mesh uploaded successfully to VRAM (GPU)
INFO: VAO: [ID 9] Mesh uploaded successfully to VRAM (GPU)

Issue Screenshot

Android:

Desktop:

Code Example

Example Android/Desktop (.zip)

#include "raylib.h"
#include "raymath.h"

int main()
{
    InitWindow(800, 450, "raylib - OBJ/MTL test");

    Camera camera = { };
    camera.position = { 10.0f, 10.0f, 10.0f };
    camera.target = { 0.0f, 0.0f, 0.0f };
    camera.up = { 0.0f, 1.0f, 0.0f };
    camera.fovy = 45.0f;
    camera.projection = CAMERA_PERSPECTIVE;

    Model models = LoadModel("suv.obj");
    {
        BoundingBox bb = GetModelBoundingBox(models);
        Vector3 center = { };
        center.x = bb.min.x  + (((bb.max.x - bb.min.x)/2));
        center.z = bb.min.z  + (((bb.max.z - bb.min.z)/2));
        Matrix matTranslate = MatrixTranslate(-center.x, 0, -center.z);
        models.transform = matTranslate;
    }

    SetTargetFPS(60);

    while (!WindowShouldClose())
    {
        UpdateCamera(&camera, CAMERA_ORBITAL);

        BeginDrawing();
        ClearBackground(RAYWHITE);
            BeginMode3D(camera);
                DrawModel(models, { 0, 0, 0 }, 1.0f, WHITE);
                DrawGrid(10, 1.0);
            EndMode3D();
        EndDrawing();
    }

    UnloadModel(models);
    CloseWindow();

    return 0;
}