[gtk+] GDK W32: fix monitor pruning code

[Руслан Ижбулатов <ruslanizhb src gnome org>]

commit 323a601123c341886c39f55096d656c750f028a9
Author: Руслан Ижбулатов <lrn1986 gmail com>
Date:   Thu Nov 23 07:15:28 2017 +0000

    GDK W32: fix monitor pruning code
    
    Decrement the counter for each removed element, otherwise we skip
    one element every time we remove one. Also, no need for continue here.

 gdk/win32/gdkmonitor-win32.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/gdk/win32/gdkmonitor-win32.c b/gdk/win32/gdkmonitor-win32.c
index 56b4a84..2f7afd3 100644
--- a/gdk/win32/gdkmonitor-win32.c
+++ b/gdk/win32/gdkmonitor-win32.c
@@ -766,10 +766,7 @@ prune_monitors (EnumMonitorData *data)
       m = g_ptr_array_index (data->monitors, i);
 
       if (m->remove)
-        {
-          g_ptr_array_remove_index (data->monitors, i);
-          continue;
-        }
+        g_ptr_array_remove_index (data->monitors, i--);
     }
 }