Silence a Clang warning about an unused variable.
Silence a Clang warning about an unused variable.

osamu0329nakamura/googletest,osamu0329nakamura/googletest,goby/googletest,BeeswaxIO/googletest,gclone/googletest,Perfexion/googletest,goby/googletest,osamu0329nakamura/googletest,dpull/googletest,gclone/googletest,gclone/googletest,BeeswaxIO/googletest,dpull/googletest,old8xp/googletest-from-google,old8xp/googletest-from-google,Perfexion/googletest,old8xp/googletest-from-google,BeeswaxIO/googletest,Perfexion/googletest,goby/googletest,dpull/googletest