[gnome-applets] battstat: fix -Wincompatible-pointer-types warnings

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 052a8bd40e3bdfa4dd932effbcd080d7b98d64df
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Apr 3 21:53:26 2020 +0300

    battstat: fix -Wincompatible-pointer-types warnings

 gnome-applets/battstat/battstat-upower.c | 11 +++++++++--
 gnome-applets/battstat/properties.c      |  2 +-
 2 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/gnome-applets/battstat/battstat-upower.c b/gnome-applets/battstat/battstat-upower.c
index b44199c7d..5fc90fb93 100644
--- a/gnome-applets/battstat/battstat-upower.c
+++ b/gnome-applets/battstat/battstat-upower.c
@@ -90,8 +90,15 @@ battstat_upower_initialise (void (*callback) (void))
   }
   g_ptr_array_unref(devices);
 
-  g_signal_connect_after( upc, "device-added", device_cb, NULL );
-  g_signal_connect_after( upc, "device-removed", device_removed_cb, NULL );
+  g_signal_connect_after (upc,
+                          "device-added",
+                          G_CALLBACK (device_cb),
+                          NULL);
+
+  g_signal_connect_after (upc,
+                          "device-removed",
+                          G_CALLBACK (device_removed_cb),
+                          NULL);
 
   return NULL;
 
diff --git a/gnome-applets/battstat/properties.c b/gnome-applets/battstat/properties.c
index ff85fece4..921e3fd33 100644
--- a/gnome-applets/battstat/properties.c
+++ b/gnome-applets/battstat/properties.c
@@ -215,7 +215,7 @@ prop_cb (GSimpleAction *action,
 
   builder = gtk_builder_new_from_resource (GRESOURCE_PREFIX "/ui/battstat-applet.ui");
 
-  battstat->prop_win = GTK_DIALOG (gtk_builder_get_object (builder, 
+  battstat->prop_win = GTK_WIDGET (gtk_builder_get_object (builder,
                                   "battstat_properties"));
   gtk_window_set_screen (GTK_WINDOW (battstat->prop_win),
                         gtk_widget_get_screen (GTK_WIDGET (battstat)));