st/nine: Do not wait for DEFAULT lock for surfaces when we can
st/nine: Do not wait for DEFAULT lock for surfaces when we can

If the surfaces (and the texture container) are not referenced,
then they are no pending operations on them. We can lock directly.

Signed-off-by: Axel Davy <2b6ef604b998fb81662f85c329e4fc020eae8e5d@ens.fr>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler