Android builds fail for this warning.

Bug: b/130335507
Bug: b/130461662
Change-Id: I2c5be9199f9a393d477345c194cdf940cc7404eb
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/29870Reviewed-by: Chris Forbes <chrisforbes@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Ben Clayton <bclayton@google.com>