refs #5661, move advancement of cleaner head to outside of if-clause,...

refs #5661, move advancement of cleaner head to outside of if-clause, preventing infinite loop in cleaner

git-svn-id: file:///svn/toku/tokudb@49557 c7de825b-a66e-492c-adef-691d508d4ae1

ft/cachetable.cc

@@ -2974,8 +2974,8 @@ int cleaner::run_cleaner(void) {
                         best_score = score;
                         best_pair = m_pl->m_cleaner_head;
                     }
-                    m_pl->m_cleaner_head = m_pl->m_cleaner_head->clock_next;
                 }
+                m_pl->m_cleaner_head = m_pl->m_cleaner_head->clock_next;
                 continue;
             }
             pair_lock(m_pl->m_cleaner_head);