Fix for: #19626 - Fix the Windows 7 crash

The image data for glTexImage2D is size=width x height without any borders. So there must be a border of 0 given when calling glTexImage2D, otherwise there is not enough image data causing crashes when textures get loaded.

The effect occurs reproducible on Win7 with ATI cards. Maybe their OpenGL-Implementation is less robust ...
Merge pull request #2829 from talentraspel/19626

Fix for: #19626 - Fix the Windows 7 crash