[gtk/wip/carlosg/issue-1317] modules: Check current context before retrieving surrounding

[Carlos Garnacho <carlosg src gnome org>]

commit 88dc784256289820fac148fc5c23d0ad92419881
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Sep 7 16:54:13 2018 +0200

    modules: Check current context before retrieving surrounding
    
    There may be situations where this might get called while the
    currently focused context just went away (eg. after setting the
    text widget unsensitive).
    
    Closes: #1317

 modules/input/imwayland.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/modules/input/imwayland.c b/modules/input/imwayland.c
index 3589c4c130..32d3c4fb0e 100644
--- a/modules/input/imwayland.c
+++ b/modules/input/imwayland.c
@@ -121,6 +121,9 @@ notify_external_change (GtkIMContextWayland *context)
 {
   gboolean result;
 
+  if (!global->current)
+    return;
+
   context->surrounding_change = ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_OTHER;
   g_signal_emit_by_name (global->current, "retrieve-surrounding", &result);
 }