Add log when we're done with auto-closing changes

This helps with debugging.

Change-Id: I9ec5ec5d4f6f83beeec9b4913dc98924e549e8a7

java/com/google/gerrit/server/git/receive/ReceiveCommits.java

@@ -3360,6 +3360,8 @@ class ReceiveCommits {
         logger.atSevere().withCause(e).log("Can't insert patchset");
       } catch (UpdateException e) {
         logger.atSevere().withCause(e).log("Failed to auto-close changes");
+      } finally {
+        logger.atFine().log("Done auto-closing changes");
       }
     }
   }