[DoomBSP] BSP 5.1 compile error on big-endian platforms

[Andre M. <ama...@te...>]

Due to a typo, BSP 5.1 doesn't build on big-endian platforms. In
endian.c, at line 198, ConvertLinedef() is misspelt as
ConvertLineDef().

After fixing the error, it compiled and worked fine with gcc-3.3
-maix32 on AIX 5.1. I haven't tried 64-bit mode yet.

--=20
Andr=E9 Majorel
http://www.teaser.fr/~amajorel/