The return value of `RenderTexture::create` is being ignored

[vittorioromeo]

This warning is produced when compiling the latest version of imgui-sfml:

imgui-SFML.cpp: In function 'void ImGui::SFML::UpdateFontTexture()':
imgui-SFML.cpp:584:19: warning: ignoring return value of 
    'bool sf::Texture::create(unsigned int, unsigned int)', declared with attribute 'nodiscard' [-Wunused-result]

  584 |     texture.create(width, height);
      |     ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

We would need to react on failure, possibly by printing some sort of error message to the console, or by propagating a return value up the stack to the caller of Init.

[oprypin]

This was fixed by #191

[eliasdaler]

Thank you for noticing, closing.