graphics/exifprobe: fix threaded build
- readfile.o ---
cc -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -DCOLOR -O -c readfile.c -o readfile.o
readfile.c:30:23: error: byteorder.h: No such file or directory
- [readfile.o] Error code 1
make[1]: stopped in /wrkdirs/usr/ports/graphics/exifprobe/work/exifprobe-2.0.1
Creating byteorder.h: #define NATIVE_BYTEORDER_BIGENDIAN