MonetDB: default - Destroy mutex only when refcount goes to 0. T...

[Pedro Ferreira]

Changeset: afb739be3932 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=afb739be3932
Modified Files:
        sql/storage/objectset.c
Branch: default
Log Message:

Destroy mutex only when refcount goes to 0. This hopefully fixes rename05 test 
on Windows


diffs (14 lines):

diff --git a/sql/storage/objectset.c b/sql/storage/objectset.c
--- a/sql/storage/objectset.c
+++ b/sql/storage/objectset.c
@@ -539,9 +539,9 @@ os_dup(objectset *os)
 void
 os_destroy(objectset *os, sql_store store)
 {
-       MT_lock_destroy(&os->ht_lock);
        if (--os->refcnt > 0)
                return;
+       MT_lock_destroy(&os->ht_lock);
        versionhead* n=os->name_based_h;
        while(n) {
                objectversion *ov = n->ov;
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