C2SoftVorbisDec: Fix memory leaks in multiple headers case

Bug: 154302257
Test: atest android.mediav2.cts

Change-Id: I3fd89a3f504d29d2fdc2bfc9f6c73031765eb578
(cherry picked from commit a15aa8d1aa0b641d35245daa628cd7739f130c02)
1 file changed