GLUT_WINDOW_HEADER_HEIGHT should always have been GLUT_WINDOW_BORDER_HEIGHT.
[freeglut] / include / GL /
drwxr-xr-x   ..
-rw-r--r-- 681 freeglut.h
-rw-r--r-- 9583 freeglut_ext.h
-rw-r--r-- 27085 freeglut_std.h
-rw-r--r-- 639 glut.h