[libvirt PATCH] tests: fix incorrect free of GVariant in our GLib mock functions

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GLib implementation of g_dbus_connection_call_sync() calls
g_variant_ref_sink() on the passed @parameters to make sure they have
proper reference. If the original reference is floating the
g_dbus_connection_call_sync() consumes it, but if it's normal reference
it will just add another one.

Our mock functions were only freeing the @parameters which is incorrect
and doesn't reflect how the real implementation works.

Reported-by: Cole Robinson <crobinso@xxxxxxxxxx>
Signed-off-by: Pavel Hrdina <phrdina@xxxxxxxxxx>
---
 tests/networkxml2firewalltest.c | 4 +++-
 tests/virfirewalltest.c         | 3 +++
 tests/virpolkittest.c           | 3 +++
 tests/virsystemdtest.c          | 4 +++-
 4 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tests/networkxml2firewalltest.c b/tests/networkxml2firewalltest.c
index e0244f508e..3496445f0d 100644
--- a/tests/networkxml2firewalltest.c
+++ b/tests/networkxml2firewalltest.c
@@ -60,8 +60,10 @@ VIR_MOCK_WRAP_RET_ARGS(g_dbus_connection_call_sync,
                        GCancellable *, cancellable,
                        GError **, error)
 {
-    if (parameters)
+    if (parameters) {
+        g_variant_ref_sink(parameters);
         g_variant_unref(parameters);
+    }
 
     VIR_MOCK_REAL_INIT(g_dbus_connection_call_sync);
 
diff --git a/tests/virfirewalltest.c b/tests/virfirewalltest.c
index 607638e9d0..646b999d96 100644
--- a/tests/virfirewalltest.c
+++ b/tests/virfirewalltest.c
@@ -79,6 +79,9 @@ VIR_MOCK_WRAP_RET_ARGS(g_dbus_connection_call_sync,
     GVariant *reply = NULL;
     g_autoptr(GVariant) params = parameters;
 
+    if (params)
+        g_variant_ref_sink(params);
+
     VIR_MOCK_REAL_INIT(g_dbus_connection_call_sync);
 
     if (STREQ(bus_name, "org.freedesktop.DBus") &&
diff --git a/tests/virpolkittest.c b/tests/virpolkittest.c
index 011d83a506..b7cbe28466 100644
--- a/tests/virpolkittest.c
+++ b/tests/virpolkittest.c
@@ -52,6 +52,9 @@ VIR_MOCK_WRAP_RET_ARGS(g_dbus_connection_call_sync,
     GVariant *reply = NULL;
     g_autoptr(GVariant) params = parameters;
 
+    if (params)
+        g_variant_ref_sink(params);
+
     VIR_MOCK_REAL_INIT(g_dbus_connection_call_sync);
 
     if (STREQ(bus_name, "org.freedesktop.PolicyKit1") &&
diff --git a/tests/virsystemdtest.c b/tests/virsystemdtest.c
index c1411d7c05..bd0ca51140 100644
--- a/tests/virsystemdtest.c
+++ b/tests/virsystemdtest.c
@@ -54,8 +54,10 @@ VIR_MOCK_WRAP_RET_ARGS(g_dbus_connection_call_sync,
 {
     GVariant *reply = NULL;
 
-    if (parameters)
+    if (parameters) {
+        g_variant_ref_sink(parameters);
         g_variant_unref(parameters);
+    }
 
     VIR_MOCK_REAL_INIT(g_dbus_connection_call_sync);
 
-- 
2.26.2




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