Fix bugs regarding clamping of numFrames variable.

there is a clamping value in getDurationUsIfPlayedAtSampleRate function
numFrames parameter is uint32_t type. when return value, cast uint32_t to int32_t.
that make clamp value of numFrames

Signed-off-by : Hyoungjun Byun <hyoungjun.byun@lge.com>

Change-Id: Ib97d89b33a8e5b6bea3d499e4b44d1056d7fae66
1 file changed