[gnome-maps] searchPopover: Remove unused argument

[Marcus Lundblad <mlundblad src gnome org>]

commit a5425417dd775da17ca335a28f4f116cd087429b
Author: Marcus Lundblad <ml update uu se>
Date:   Mon Nov 6 22:48:56 2017 +0100

    searchPopover: Remove unused argument
    
    https://bugzilla.gnome.org/show_bug.cgi?id=782861

 src/searchPopover.js |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/searchPopover.js b/src/searchPopover.js
index 585801f..1860a39 100644
--- a/src/searchPopover.js
+++ b/src/searchPopover.js
@@ -42,8 +42,9 @@ var SearchPopover = new Lang.Class({
         // propagate the 'enter' key press if there is a selection.
         this._entry.connect('key-press-event',
                             this._propagateKeys.bind(this));
-        this._entry.connect('button-press-event',
-                            this._list.unselect_all.bind(this._list));
+        this._entry.connect('button-press-event', (function() {
+            this._list.unselect_all();
+        }).bind(this));
     },
 
     _propagateKeys: function(entry, event) {