Don't signal fifo->empty right after reading the last buffer

but only when a read was requested and the fifo is empty.

Rationale: ao_close uses fifo_wait_empty to make sure all buffers were written
to the driver before it calls close on the driver. But if empty is already
signaled when ao_loop just reads the next buffer then ao_close might close the
driver before ao_loop has a chance to send the buffer to the driver.

0 files changed, 0 insertions, 0 deletions