Rename index to idx to avoid shadowing
Rename index to idx to avoid shadowing

Signed-off-by: Julien Danjou <5c682c2d1ec4073e277f9ba9f4bdf07e5794dabe@danjou.info>

OpenInkpot-archive/iplinux-libxcb,topcat/xcb-win32,topcat/xcb-win32,topcat/xcb-win32,stapelberg/libxcb,stapelberg/libxcb,stapelberg/libxcb,topcat/xcb-win32,OpenInkpot-archive/iplinux-libxcb,OpenInkpot-archive/iplinux-libxcb,topcat/xcb-win32