Two unrelated minor bugs: config file parsing and arrow painting

[Diego Garcia]

Thank you for all the work you put into this great program. I just wanted to report two very minor issues I've ran into while setting things up:

Issue #1. If the first line of refind.conf is an empty newline, then the whole configuration file is silently ignored.

This is ignored:

\n
# Comment\n
[...]

While this works:

 \n
# Comment\n
[...]

And this works as well:

# Comment\n
[...]

Issue #2. Arrows get mangled when moving left and right between OS tags, although initially they appear fine when the program loads:

It's possible this only happens with custom icon dimensions. Mine are as follows:

• big_icon_size set to 256, big (OS) icons are 256x256 PNG images
• small_icon_size set to 144, small (tool) icons are 144x144 PNG images
• selection_big custom image is 288x288
• selection_small custom image is is 192x192
• Screen resolution is 1920x1080 (the default setting, resolution is not explicitly set)

I also tried changing small_icon_size to 96, and replacing the images accordingly, however the problem is even more noticeable:

I also checked that this happens regardless of the setting for banner_scale, and also whether or not I set max_tags 0 explicitly.