[gnome-builder] gjs_symbols: don't choke on toplevel destructuring assingments

[Giovanni Campagna <gcampagna src gnome org>]

commit 4b0cf068afdd1842a4e8999af94d4dbd45b4d469
Author: Giovanni Campagna <gcampagn cs stanford edu>
Date:   Sun Nov 26 02:37:00 2017 -0800

    gjs_symbols: don't choke on toplevel destructuring assingments
    
    A destructuring assignment Pattern does not have a 'name' property,
    which would crash the symbol extractor and abort everything.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790846

 src/plugins/gjs-symbols/gjs_symbols.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gjs-symbols/gjs_symbols.py b/src/plugins/gjs-symbols/gjs_symbols.py
index ddd59e5..e37026d 100644
--- a/src/plugins/gjs-symbols/gjs_symbols.py
+++ b/src/plugins/gjs-symbols/gjs_symbols.py
@@ -99,6 +99,9 @@ class JsSymbolTree(GObject.Object, Ide.SymbolTree):
             for dec in dict_['declarations']:
                 line = max(dec['id']['loc']['start']['line'] - 1, 0)
                 col = dec['id']['loc']['start']['column']
+                if dec['id']['type'] != 'Identifier':
+                    # destructured assignment, ignore
+                    return
                 name = dec['id']['name']
                 kind = Ide.SymbolKind.VARIABLE
                 children = []