Merge "Fix integer sanitizer in FastMixerDumpState."

    uint32_t bounds = mBounds;

    uint32_t newestOpen = bounds & 0xFFFF;

    uint32_t oldestClosed = bounds >> 16;

    uint32_t n = (newestOpen - oldestClosed) & 0xFFFF;

    //uint32_t n = (newestOpen - oldestClosed) & 0xFFFF;

    uint32_t n;

    __builtin_sub_overflow(newestOpen, oldestClosed, &n);

    n = n & 0xFFFF;

    if (n > mSamplingN) {

        ALOGE("too many samples %u", n);

        n = mSamplingN;