Check if it finished before we acquired the lock

Author: jpcamara

app/models/solid_queue/batch_record.rb

@@ -74,7 +74,9 @@ def check_completion!
       end
 
       with_lock do
-        if pending_jobs <= 0
+        if finished?
+          # do nothing
+        elsif pending_jobs <= 0
           if failed_jobs > 0
             mark_as_failed!
           else