[PATCH] qemu_domain: Don't unref NULL hash table in qemuDomainRefreshStatsSchema()

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The g_hash_table_unref() function does not accept NULL. Passing
NULL results in a glib warning being triggered. Check whether the
hash table is not NULL and unref it only then.

Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---
 src/qemu/qemu_domain.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index b6ad118f1f..881c88d54c 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -11923,7 +11923,8 @@ qemuDomainRefreshStatsSchema(virDomainObj *dom)
     if (!schema)
         return -1;
 
-    g_hash_table_unref(priv->statsSchema);
+    if (priv->statsSchema)
+        g_hash_table_unref(priv->statsSchema);
     priv->statsSchema = schema;
 
     return 0;
-- 
2.39.1




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