am dd28d563: Fix 2209967 Tonegenerator: mutex not release in startTone() upon timeout waiting for the stop sequence to complete.

Merge commit 'dd28d56368441537ec5eb42150516416fdbf10ad' into eclair-mr2

* commit 'dd28d56368441537ec5eb42150516416fdbf10ad':
  Fix 2209967 Tonegenerator: mutex not release in startTone() upon timeout waiting for the stop sequence to complete.