code cleanup
code cleanup

grame-cncm/libmusicxml,arshiacont/libmusicxml,arshiacont/libmusicxml,arshiacont/libmusicxml,arshiacont/libmusicxml,arshiacont/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml