HID Usage Tables URL Update


#1

https://hg.libsdl.org/SDL/file/tip/include/SDL_scancode.h#l41
references an older URL (http://www.usb.org/developers/hidpage/Hut1_12v2.pdf) that gives a page not found.

An updated URL is https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf


#2

Fixed https://hg.libsdl.org/SDL/rev/572bb959fdc5
Thanks!