Fixed the test case for bug #31174 to not fail on 64-bit platforms.

Author: kaa@polly.(none)

mysql-test/r/repair.result

@@ -84,7 +84,7 @@ SET myisam_repair_threads=@@global.myisam_repair_threads;
 SET myisam_sort_buffer_size=@@global.myisam_sort_buffer_size;
 DROP TABLE t1;
 CREATE TABLE t1(a CHAR(255), KEY(a));
-SET myisam_sort_buffer_size=4196;
+SET myisam_sort_buffer_size=4496;
 INSERT INTO t1 VALUES
 ('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
 ('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),

mysql-test/t/repair.test

@@ -88,7 +88,7 @@ DROP TABLE t1;
 #              myisam_sort_buffer_size
 #
 CREATE TABLE t1(a CHAR(255), KEY(a));
-SET myisam_sort_buffer_size=4196;
+SET myisam_sort_buffer_size=4496;
 INSERT INTO t1 VALUES
 ('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
 ('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),