FontForge -- An Outline Font Editor

This patch has been copied to github since the FontForge developers are
using github and find it easier to track changes there. Patches are located
here: https://github.com/JoesCat/FontForge_JoesCat

and the current mainstream if this patch is accepted is located at:
https://github.com/fontforge

...just noted that it should have remained as 512 for this, but I'm
guessing you are manually entering these commits since I haven't yet set up
a github clone of fontforge.
- buffer[512]='\0'; buf2[0] = buf2[300]='\0'; oldname[0]='\0';
+ buffer[511]='\0'; buf2[0] = buf2[300]='\0'; oldname[0]='\0';

leave it as 512 instead of 511