Fix compilation warnings
Exposed by change in compilation flags in the nightlies (cherry picked from commit 4a769e1d)
To be cherry-picked to stripping24r2-28r2-patches branch
Edited by Marco Cattaneo
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Exposed by change in compilation flags in the nightlies (cherry picked from commit 4a769e1d)
To be cherry-picked to stripping24r2-28r2-patches branch