[mutter] monitor: Check hotplug update mode before getting suggested x/y

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 574b49ed95e9a7b42745c79e5f58c493aaae8b2e
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Feb 26 16:44:28 2020 +0100

    monitor: Check hotplug update mode before getting suggested x/y
    
    Without it being TRUE, the suggested x/y has no meaning.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1287

 src/backends/meta-monitor.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/backends/meta-monitor.c b/src/backends/meta-monitor.c
index 63ff64b0f5..bade4d1665 100644
--- a/src/backends/meta-monitor.c
+++ b/src/backends/meta-monitor.c
@@ -716,6 +716,9 @@ meta_monitor_normal_get_suggested_position (MetaMonitor *monitor,
   const MetaOutputInfo *output_info =
     meta_monitor_get_main_output_info (monitor);
 
+  if (!output_info->hotplug_mode_update)
+    return FALSE;
+
   if (output_info->suggested_x < 0 && output_info->suggested_y < 0)
     return FALSE;