#11 GLUTFuncLightImplWithFonts: Helvetica 18 gives Helvetica 12

[Peter Taylor]

The switch in GLUTFuncLightImplWithFonts.getFontInfo(int) for case
GLUT_BITMAP_HELVETICA_18 returns
glutBitmapHelvetica12.getBitmapFontRec(). Should be
glutBitmapHelvetica18.getBitmapFontRec().