iov: Fix do_send_recv() for MinGW (also fixes a build breakage)
Commit 25e5e4c7 broke compilation for non POSIX hosts (e.g. MinGW) because it partially replaced "ret" by "count". It also changed the handling of EINTR in a wrong way. The patch restores the old code for these two changes. Signed-off-by: NStefan Weil <sw@weilnetz.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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