Merge pull request #9274 from rabbitmq/loic-fix-cq-upgrade-error

CQ: Fix 3.13 upgrade error in the message store

Author: Loïc Hoguin

deps/rabbit/src/rabbit_msg_store.erl

@@ -129,7 +129,7 @@
         }).
 
 -record(file_summary,
-        {file, valid_total_size, file_size, locked}).
+        {file, valid_total_size, unused1, unused2, file_size, locked, unused3}).
 
 -record(gc_state,
         { dir,