Default device volumes not initialised

After fresh rom install default device volumes are not initialised
and therefore muted.

Only after manually changing a device volume it can be used.
IMHO the check for AudioSystem.DEVICE_OUT_DEFAULT here is not correct
since it will not init mIndex and mLastAudibleIndex collections.

Maybe there is a better way to fix this

Change-Id: If2cfd0e931767cc4b9d44628196232afc1c14fc4
Add safe headset volume check (1/2) Credit: CyanogenMod

Change-Id: I10f6bfc8a0814d4105302a5090d85b3f89f4c0d2