Update .abi-compliance-history for pgstat_drop_entry()

As noted in the commit message of 850b9218c8e4, this function has gained
an extra called "missing_ok".  All the callers of this routine should be
in core in the v15-v17 range.  For v18, I have found one custom stats
kind that would be impacted by this change.

Discussion: https://postgr.es/m/ajOE3uRxVgSlPRcw@paquier.xyz
Backpatch-through: 15-18

diff --git a/.abi-compliance-history b/.abi-compliance-history
index 42dc8be1a41a82135a4bfeee855913683ec5a538..50b244b34d4bb5298bd73bf7ba4f93f25eafb4db 100644 (file)
--- a/.abi-compliance-history
+++ b/.abi-compliance-history
@@ -18,6 +18,15 @@
 # Be sure to replace "<ADD JUSTIFICATION HERE>" with details of your change and
 # why it is deemed acceptable.
 
+bf4616b598a36bfb606c7bd81c0991d895577cb3
+#
+# Fix PANIC with track_functions due to concurrent drop of pgstats entries
+# 2026-06-18 11:49:39 +0900
+#
+# This commit has added a "missing_ok" argument to pgstat_drop_entry().  All
+# the callers of this routine are in core for v15-v17.  One custom stats kinds
+# available in the public since v18 is impacted (maintainer informed).
+
 e37b598028469d260650e5e1671c8275d30e22b6
 #
 # Add file_extend_method=posix_fallocate,write_zeros.