Fix clang build.

Since this is an upstream project, just disable the warning for now.
It doesn't cause any harm, it's just useless code.

Change-Id: Icaec05aa4b87fa742405710058e1abf9c1e7ee50
(cherry picked from commit 22bd6386e28c9bd3fd15d896bc224cd989dd871b)
1 file changed