[gnome-software: 1/2] snap: Add missing async finish call

[Milan Crha <mcrha src gnome org>]

commit 9e4f708201a9216e44f9ea40390bb0d38d4fca34
Author: Philip Withnall <pwithnall endlessos org>
Date:   Mon Feb 7 13:33:05 2022 +0000

    snap: Add missing async finish call
    
    This fixes a crash in the snap plugin introduced by commit
    d3736cf2e3c2d38fa4a1de76ce8a8d84369be293 being incomplete and untested.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>
    
    Fixes: #1629

 plugins/snap/gs-plugin-snap.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/plugins/snap/gs-plugin-snap.c b/plugins/snap/gs-plugin-snap.c
index 905825f6b..dbd96bce1 100644
--- a/plugins/snap/gs-plugin-snap.c
+++ b/plugins/snap/gs-plugin-snap.c
@@ -1218,6 +1218,12 @@ get_snaps_cb (GObject      *object,
        g_autoptr(GPtrArray) local_snaps = NULL;
        g_autoptr(GError) local_error = NULL;
 
+       local_snaps = snapd_client_get_snaps_finish (client, result, &local_error);
+       if (local_snaps == NULL) {
+               g_task_return_error (task, g_steal_pointer (&local_error));
+               return;
+       }
+
        for (guint i = 0; i < gs_app_list_length (list); i++) {
                GsApp *app = gs_app_list_index (list, i);
                const gchar *snap_name, *name, *website, *contact, *version;