common/iobuf.c: Rename iobuf_flush and make it a static function.
* common/iobuf.h (iobuf_flush): Remove prototype. * common/iobuf.c (filter_flush): New static prototype. (iobuf_flush): Rename... (filter_flush): ... to this. Make static. Simplify code. Update callers.
- Signed-off-by: Neal H. Walfield <neal@g10code.com>.