Rollup merge of #69619 - matthiaskrgr:misc, r=eddyb

more cleanups

* use starts_with() instead of chars().next() == Some(x)
* use subsec_micros() instead of subsec_nanos() / 1000
* use for (idx, item) in iter.enumerate() instead of manually counting loop iterations with variables
* use values() or keys() respectively when iterating only over keys or values of maps.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstd/sys/unix/net.rs b/src/libstd/sys/unix/net.rs
index 79b0dc02978..b37675e0a0a 100644
--- a/src/libstd/sys/unix/net.rs
+++ b/src/libstd/sys/unix/net.rs
@@ -280,7 +280,7 @@ impl Socket {
                 };
                 let mut timeout = libc::timeval {
                     tv_sec: secs,
-                    tv_usec: (dur.subsec_nanos() / 1000) as libc::suseconds_t,
+                    tv_usec: dur.subsec_micros() as libc::suseconds_t,
                 };
                 if timeout.tv_sec == 0 && timeout.tv_usec == 0 {
                     timeout.tv_usec = 1;