test_if_hard_path() crashes on recursively resolving $HOME

--- a/mysql-test/main/symlink.test

+++ b/mysql-test/main/symlink.test

@@ -40,7 +40,7 @@ drop table t2;

 --replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR

 eval create table t9 (a int not null auto_increment, b char(16) not null, primary key (a)) 

-engine=myisam data directory="$MYSQLTEST_VARDIR/tmp" index directory="$MYSQLTEST_VARDIR/run";

+engine=myisam data directory="~/foo/bar/mariadb/mysql-test/var/tmp" index directory="$MYSQLTEST_VARDIR/run";

 insert into t9 select * from t1;

 check table t9;

$ HOME='~/' ./mtr main.symlink