Ecore_X(cb): Work around (possible) xcb bug where ecore_x_screen_index_get was not returning the proper 0-based index.
Ecore_X(cb): Work around (possible) xcb bug where
ecore_x_screen_index_get was not returning the proper 0-based index.

NB: Fixes OpenGL with xcb.



SVN revision: 63440

gfriloux/ecore,gfriloux/ecore,gfriloux/ecore