jitter: remove unused variable
jitter: remove unused variable

maolin-cdzl/speexdsp,felipebetancur/speexdsp,ksophocleous/speexdsp,maolin-cdzl/speexdsp,maolin-cdzl/speexdsp,felipebetancur/speexdsp,felipebetancur/speexdsp,ksophocleous/speexdsp,felipebetancur/speexdsp,maolin-cdzl/speexdsp,ksophocleous/speexdsp,ksophocleous/speexdsp