tail: properly parse fractional seconds when monitoring a pid

* src/tail.c (tail_forever_inotify): The fractional
part of the delay was 1000 times too large.
* tests/tail-2/pid: Add a test to ensure the
timeout happens for this case.

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/tail-2/pid b/tests/tail-2/pid
index 446c6dbe3..b290f012c 100755
--- a/tests/tail-2/pid
+++ b/tests/tail-2/pid
@@ -70,4 +70,8 @@ fi
 getlimits_
 tail --pid=$INT_MAX -f /dev/null || fail=1
 
+# Ensure fractional sleep parameter is honored with --pid
+timeout 1 tail -s.1 -f /dev/null --pid=$PID_T_MAX
+test $? = 124 && fail=1
+
 Exit $fail