Fixed memory corruption that affected pdo_sqlite2.

diff --git a/ext/pdo/pdo_dbh.c b/ext/pdo/pdo_dbh.c
index e3f811d0da982068283780b63bb094ffb54456aa..19042f8ca9330403ee74c371eca1e2eb0354e20c 100755 (executable)
--- a/ext/pdo/pdo_dbh.c
+++ b/ext/pdo/pdo_dbh.c
@@ -1344,6 +1344,11 @@ static void dbh_free(pdo_dbh_t *dbh TSRMLS_DC)
        if (--dbh->refcount)
                return;
 
+       if (dbh->query_stmt) {
+               zval_dtor(&dbh->query_stmt_zval);
+               dbh->query_stmt = NULL;
+       }
+
        if (dbh->methods) {
                dbh->methods->closer(dbh TSRMLS_CC);
        }