We were only creating an X11 window for a new drawin after we handled all the
options that were passed in. However, this means that drawin({ height = 4 })
would try to resize the window before we created a window, which caused an X11
error.
Fix this by moving our initialization before of the handling of construction
arguments.
Signed-off-by: Uli Schlachter <psychon@znc.in>