Fix regression in QWaylandGlContext::makeCurrent for offscreen surfaces

[ChangeLog][QPA plugin] Fixed a bug where offscreen surfaces would get
surfaceless EGL contexts.

Fixes a regression in in bf09c7a1.

The call, window->updateSurface(window->isExposed()), is problematic because
offscreen textures are never exposed, and consequently, eglSurface will be
EGL_NO_SURFACE, which will then create a surfaceless context in the call:

    eglMakeCurrent(m_eglDisplay, eglSurface, eglSurface, m_context)

This reverts to the old behavior of always trying to create an EGL surface,
unless the window doesn't have a valid wl_surface, in which case it doesn't
make sense (which is what bf09c7a1 fixed, QTBUG-65553).

Task-number: QTBUG-70242
Task-number: QTBUG-68605
Task-number: QTBUG-67601
Change-Id: I44b07bb8bf4b33c73c6379a1de8e9e5cfd220b51
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
(cherry picked from commit 192b2e8f59e7f0cb3c2d482524bf171a81a213c5)

0 files changed, 0 insertions, 0 deletions