Merge pull request #3568 from VladDBA/dev

Fix for sp_BlitzLock @debug=1 throwing an error when no plans found in plan cache - #3567

Author: BrentOzar

sp_BlitzLock.sql

@@ -4049,17 +4049,23 @@ BEGIN
             FROM @sysAssObjId AS s
             OPTION(RECOMPILE);
 
+            IF OBJECT_ID('tempdb..#available_plans') IS NOT NULL
+            BEGIN
             SELECT
                 table_name = N'#available_plans',
                 *
             FROM #available_plans AS ap
             OPTION(RECOMPILE);
+            END;
 
+            IF OBJECT_ID('tempdb..#dm_exec_query_stats') IS NOT NULL
+            BEGIN    
             SELECT
                 table_name = N'#dm_exec_query_stats',
                 *
             FROM #dm_exec_query_stats
             OPTION(RECOMPILE);
+            END;
 
             SELECT
                 procedure_parameters =