Tweak changes file to mention bug number

diff --git a/changes/log_heartbeat_test b/changes/log_heartbeat_test
index f0d143b6debe4fbf059b66bd00e4de11671692fe..7db97ed03c2fc63bf1e6739c3d133bc7ad5571ad 100644 (file)
--- a/changes/log_heartbeat_test
+++ b/changes/log_heartbeat_test
@@ -3,3 +3,4 @@
       with non-integer offsets. Instead of comparing the end of the
       time string against a constant, compare it to the output of
       format_local_iso_time when given the correct input.
+      Fixes bug 18039.