Attempt to fix a rare random test error in main.information_schema.

Add missing REAP to the test.

A later test failed with strange incorrect values for COM_SELECT
in information_schema.global_status. Since global_status is updated
at the end of session activity, it seems appropriate to ensure that
all background connections have completed before accessing it.

(I checked that the original bug still triggers the test case after
the modification with REAP).

mysql-test/r/information_schema.result

@@ -1554,7 +1554,9 @@ show open tables where f1()=0;
 drop table t1;
 drop function f1;
 select * from information_schema.tables where 1=sleep(100000);
+Got one of the listed errors
 select * from information_schema.columns where 1=sleep(100000);
+Got one of the listed errors
 explain select count(*) from information_schema.tables;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	tables	ALL	NULL	NULL	NULL	NULL	NULL	Skip_open_table; Scanned all databases

mysql-test/t/information_schema.test

@@ -1298,12 +1298,16 @@ info='select * from information_schema.tables where 1=sleep(100000)';
 disable_query_log;
 eval kill $ID;
 enable_query_log;
-disconnect conn1;
 let $wait_timeout= 10;
 let $wait_condition=select count(*)=0 from information_schema.processlist
 where state='User sleep' and
 info='select * from information_schema.tables where 1=sleep(100000)';
 --source include/wait_condition.inc
+connection conn1;
+--error 2013,ER_CONNECTION_KILLED
+reap;
+connection default;
+disconnect conn1;
 
 connect (conn1, localhost, root,,);
 connection conn1;
@@ -1318,12 +1322,16 @@ info='select * from information_schema.columns where 1=sleep(100000)';
 disable_query_log;
 eval kill $ID;
 enable_query_log;
-disconnect conn1;
 let $wait_timeout= 10;
 let $wait_condition=select count(*)=0 from information_schema.processlist
 where state='User sleep' and
 info='select * from information_schema.columns where 1=sleep(100000)';
 --source include/wait_condition.inc
+connection conn1;
+--error 2013,ER_CONNECTION_KILLED
+reap;
+connection default;
+disconnect conn1;
 
 
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