Error in Building LIBGED (Rev 64483)

[ 33%] Building C object src/libged/CMakeFiles/libged.dir/shader.c.o
[ 33%] Building C object src/libged/CMakeFiles/libged.dir/shells.c.o
[ 33%] Building CXX object src/libged/CMakeFiles/libged.dir/shape_recognition.cpp.o
/home/dracarys/GSoC/brlcad_code/src/libged/shape_recognition.cpp: In function ‘int brep_csg_conversion_tree(ged*, const tree*, tree*)’:
/home/dracarys/GSoC/brlcad_code/src/libged/shape_recognition.cpp:476:30: error: variable ‘comb’ set but not used [-Werror=unused-but-set-variable]
cc1plus: all warnings being treated as errors
make[2]: *** [src/libged/CMakeFiles/libged.dir/shape_recognition.cpp.o] Error 1
make[1]: *** [src/libged/CMakeFiles/libged.dir/all] Error 2
make: *** [all] Error 2