* gles: Fix double frees.
Remove a few explicit frees in the redirect_buffers test which are
already handled by a wrapper.
* gles: Fix double frees
A recent update to the object wrapper classes (#1268) changed the
behavior of assigning to a wrapper, whereby the wrapped object is now
released upon assignment. A couple of tests were manually calling
clReleaseMemObject and then assigning `nullptr` to the wrapper,
resulting in the wrapper calling clReleaseMemObject on an object that
had already been destroyed.
Co-authored-by: spauls <spauls@qti.qualcomm.com>
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