[PATCH 0/1] MR1914: winex11: Simplify confusing condition and error messages in wglShareLists.

[Alex Henrie (＠alexhenrie)]

Mathematically, ((a && b) || b) == b. Moreover, test_sharelists in
dlls/opengl32/tests/opengl.c checks that wglShareLists can share lists
from a source context that has been current.