Fix memory leak in multi_kv_close_test
Fix memory leak in multi_kv_close_test

- A file handle was re-opened without being closed.

Change-Id: I2c5ca2c7c79f3cae730a330a5ba7f59357b8ce01

wurikiji/forestdb,hisundar/forestdb,joliss/forestdb,zhaog/forestdb,seem-sky/forestdb,nvoron23/forestdb,nvoron23/forestdb,seem-sky/forestdb,wurikiji/forestdb,zhaog/forestdb,couchbase/forestdb,sushmaad/forestdb,jinxuan/forestdb,sushmaad/forestdb,yyangpan/forestdb,hisundar/forestdb,joliss/forestdb,jinxuan/forestdb,yyangpan/forestdb,couchbase/forestdb