_SAFE_FREE_3d

#define _SAFE_FREE_3d	(		x,
			d1,
			d2
	)

Value:

for(i=0;i<d1;i++){ \
                                  for(j=0;j<d2;j++){ \
                                    free(x[i][j]); \
                                  }\
                                  free(x[i]);\
                                 }\
                                 if(x) free(x)