inputMethod: Add a null-check for text in vfunc_set_surrounding.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/579

diff --git a/js/misc/inputMethod.js b/js/misc/inputMethod.js
index 320a6cc336fc9b3a3df429c4c55e96da8851b3c1..ec84f7277825979cde99542ff480ee10f4d38ead 100644 (file)
--- a/js/misc/inputMethod.js
+++ b/js/misc/inputMethod.js
@@ -176,7 +176,7 @@ var InputMethod = new Lang.Class({
     },
 
     vfunc_set_surrounding(text, cursor, anchor) {
-        if (this._context)
+        if (this._context && text)
             this._context.set_surrounding_text(text, cursor, anchor);
     },