Apply by doing:
       cd /usr/xenocara
       patch -p0 -E < 006_libXfont.patch

and the rebuild and reinstall libXfont:
       cd lib/libXfont
       make -f Makefile.bsd-wrapper obj
       make -f Makefile.bsd-wrapper build

Index: lib/libXfont/src/bitmap/bdfread.c
===================================================================
RCS file: /cvs/OpenBSD/xenocara/lib/libXfont/src/bitmap/bdfread.c,v
retrieving revision 1.7
retrieving revision 1.7.6.1
diff -u -p -u -r1.7 -r1.7.6.1
--- lib/libXfont/src/bitmap/bdfread.c   4 Mar 2012 18:13:47 -0000       1.7
+++ lib/libXfont/src/bitmap/bdfread.c   7 Jan 2014 20:52:54 -0000       1.7.6.1
@@ -338,7 +338,7 @@ bdfReadCharacters(FontFilePtr file, Font
       char        charName[100];
       int         ignore;

-       if (sscanf((char *) line, "STARTCHAR %s", charName) != 1) {
+       if (sscanf((char *) line, "STARTCHAR %99s", charName) != 1) {
           bdfError("bad character name in BDF file\n");
           goto BAILOUT;       /* bottom of function, free and return error */
       }