[geary/cherry-pick-58175487] Merge branch 'fix-inspector-system-info' into 'mainline'

[Michael Gratton <mjog src gnome org>]

commit d732c17f2e5e1d00eabb32cb2caa0f2cef3c83ce
Author: Michael Gratton <mike vee net>
Date:   Sun Jan 31 01:04:56 2021 +0000

    Merge branch 'fix-inspector-system-info' into 'mainline'
    
    application-client: Check for null when getting os info
    
    See merge request GNOME/geary!651
    
    (cherry picked from commit 581754872a518f158426b8c97c7adbdb402bbfc0)
    
    c524e177 application-client: Check for null when getting os info

 src/client/application/application-client.vala | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/client/application/application-client.vala b/src/client/application/application-client.vala
index 2bf4e094c..5f41eceda 100644
--- a/src/client/application/application-client.vala
+++ b/src/client/application/application-client.vala
@@ -291,12 +291,14 @@ public class Application.Client : Gtk.Application {
 
         /// Application runtime information label
         info.add({ _("Distribution name"),
-                    GLib.Environment.get_os_info(GLib.OsInfoKey.NAME)
+                    GLib.Environment.get_os_info(GLib.OsInfoKey.NAME) ??
+                    _("Unknown")
             });
 
         /// Application runtime information label
         info.add({_("Distribution release"),
-                GLib.Environment.get_os_info(GLib.OsInfoKey.VERSION)
+                GLib.Environment.get_os_info(GLib.OsInfoKey.VERSION) ??
+                _("Unknown")
             });
 
         /// Application runtime information label