[gnome-control-center] network: Fix an assertion failure

[Felipe Borges <felipeborges src gnome org>]

commit ad0db360e2b3b478d3036e281009a1f4dad74769
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Wed Aug 3 16:38:01 2022 +0200

    network: Fix an assertion failure
    
    Entering the Wi-Fi page without connected to a network trips an
    assertion failure:
    
      (gnome-control-center:14943): nm-CRITICAL **: 16:36:16.732: nm_access_point_get_frequency: assertion 
'NM_IS_ACCESS_POINT(ap)' failed
    
      Thread 1 "gnome-control-c" received signal SIGTRAP, Trace/breakpoint trap.
      0x00007ffff7c8ee51 in g_logv () from /lib64/libglib-2.0.so.0
      (gdb) bt
      #0  0x00007ffff7c8ee51 in g_logv () at /lib64/libglib-2.0.so.0
      #1  0x00007ffff7c8f0d3 in g_log () at /lib64/libglib-2.0.so.0
      #2  0x00007ffff63b7b8a in nm_access_point_get_frequency () at /lib64/libnm.so.0
      #3  0x00000000005965b1 in connect_details_page (self=0x4658210) at 
../panels/network/connection-editor/ce-page-details.c:264
      #4  0x0000000000597f9e in ce_page_details_new (connection=0xfbde70, device=0xd52360, ap=0x0, 
editor=0x50a4350) at ../panels/network/connection-editor/ce-page-details.c:570
      #5  0x0000000000593273 in net_connection_editor_set_connection (self=0x50a4350, 
connection=0x7fffcc096770) at ../panels/network/connection-editor/net-connection-editor.c:522
      #6  0x0000000000593f7d in net_connection_editor_new (connection=0x7fffcc096770, device=0xd52360, 
ap=0x0, client=0xd3a0c0) at ../panels/network/connection-editor/net-connection-editor.c:790
      #7  0x0000000000582b16 in show_details_for_row (self=0xcc3040, row=0x46587b0, list=0x4273b40) at 
../panels/network/net-device-wifi.c:987
      #8  0x00007ffff7d83845 in g_cclosure_marshal_VOID__OBJECTv () at /lib64/libgobject-2.0.so.0
      #9  0x00007ffff7da1b79 in g_signal_emit_valist () at /lib64/libgobject-2.0.so.0
      #10 0x00007ffff7da1eb8 in g_signal_emit_by_name () at /lib64/libgobject-2.0.so.0
      #11 0x000000000058d41f in on_row_configured_cb (self=0x4273b40, row=0x46587b0) at 
../panels/network/cc-wifi-connection-list.c:251
      #12 0x00007ffff7da1b79 in g_signal_emit_valist () at /lib64/libgobject-2.0.so.0
      #13 0x00007ffff7da1eb8 in g_signal_emit_by_name () at /lib64/libgobject-2.0.so.0
      #14 0x000000000058c4c4 in configure_clicked_cb (self=0x46587b0) at 
../panels/network/cc-wifi-connection-row.c:513
      #15 0x00007ffff7da1b79 in g_signal_emit_valist () at /lib64/libgobject-2.0.so.0
      #16 0x00007ffff7da1cb3 in g_signal_emit () at /lib64/libgobject-2.0.so.0
      ...

 panels/network/connection-editor/ce-page-details.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
---
diff --git a/panels/network/connection-editor/ce-page-details.c 
b/panels/network/connection-editor/ce-page-details.c
index 7c7aa9e4a..e0f43ed5d 100644
--- a/panels/network/connection-editor/ce-page-details.c
+++ b/panels/network/connection-editor/ce-page-details.c
@@ -259,13 +259,11 @@ connect_details_page (CEPageDetails *self)
         sc = nm_connection_get_setting_connection (self->connection);
         type = nm_setting_connection_get_connection_type (sc);
 
-        if (NM_IS_DEVICE_WIFI (self->device)) {
+        if (NM_IS_DEVICE_WIFI (self->device))
                 active_ap = nm_device_wifi_get_active_access_point (NM_DEVICE_WIFI (self->device));
-                frequency = nm_access_point_get_frequency (active_ap);
-        } else {
+        else
                 active_ap = NULL;
-                frequency = 0;
-        }
+        frequency = active_ap ? nm_access_point_get_frequency (active_ap) : 0;
 
         state = self->device ? nm_device_get_state (self->device) : NM_DEVICE_STATE_DISCONNECTED;