[geary/wip/460-offline-after-hibernate] Use monotonic time for ConnectivityManager's interval check

[Michael Gratton <mjog src gnome org>]

commit 405454bdc293cb93db4b82662f20139205630887
Author: Michael Gratton <mike vee net>
Date:   Wed Jul 24 17:47:50 2019 +1000

    Use monotonic time for ConnectivityManager's interval check
    
    As a result after resuming from sleep/hibernate the timed check won't
    necessarily occur immediatly, reducing spurious offline notifications.

 src/engine/util/util-connectivity-manager.vala | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/engine/util/util-connectivity-manager.vala b/src/engine/util/util-connectivity-manager.vala
index 9dc0f068..e1675077 100644
--- a/src/engine/util/util-connectivity-manager.vala
+++ b/src/engine/util/util-connectivity-manager.vala
@@ -111,7 +111,7 @@ public class Geary.ConnectivityManager : BaseObject {
                 this.remote, cancellable
             );
             this.next_check = (
-                GLib.get_real_time() + (CHECK_QUIESCENCE_MS * 1000)
+                GLib.get_monotonic_time() + (CHECK_QUIESCENCE_MS * 1000)
             );
         } catch (GLib.IOError.CANCELLED err) {
             // User cancelled, so leave as unreachable
@@ -219,7 +219,7 @@ public class Geary.ConnectivityManager : BaseObject {
             // issue in Bug 776042.
             if (this.is_reachable.is_uncertain() ||
                 this.existing_check != null ||
-                this.next_check <= GLib.get_real_time()) {
+                this.next_check <= GLib.get_monotonic_time()) {
                 this.check_reachable.begin();
             } else if (!this.delayed_check.is_running) {
                 this.delayed_check.start();