android: Use local var instead of 'mGL' member

It's never used except where it's also previously
assigned, so use a local variable instead.

Even the getter `GLController#getGL` gets
it from the EGLContext instead of using the
member.

Change-Id: Icec909f6e3e508a16fb455e81474bb336dc09362
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/159181
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions