Sink should issue a warning if eglClientWaitSyncKHR returns false.
Sink should issue a warning if eglClientWaitSyncKHR returns false.

qualcomm implementation of eglClientWaitSyncKHR() violates the spec and
returns EGL_TRUE when it succeeds. We will have to work around that by
checking for the possible errors and warn if something goes wrong.

sailfishos/gst-jolla,sailfishos/gst-jolla