[gobject-introspection] scanner: Fix misuse of message.warn_symbol

[Colin Walters <walters src gnome org>]

commit 4a006e6b7b61636e097ffdcfbe5cd6b40129842d
Author: Colin Walters <walters verbum org>
Date:   Fri Sep 3 17:11:24 2010 -0400

    scanner: Fix misuse of message.warn_symbol
    
    The "symbol" is actually just a string identifier, not
    a real symbol.  We already added the file positions when
    parsing earlier.

 giscanner/maintransformer.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/giscanner/maintransformer.py b/giscanner/maintransformer.py
index c638721..2e1a126 100644
--- a/giscanner/maintransformer.py
+++ b/giscanner/maintransformer.py
@@ -625,7 +625,7 @@ class MainTransformer(object):
                 self._apply_annotations_callable(vfunc, [parent], block)
                 break
         if not matched:
-            message.warn_symbol(node.symbol,
+            message.warn_node(node,
                 "Virtual slot %r not found for %r annotation" % (invoker_name, TAG_VFUNC))
 
     def _resolve_and_filter_type_list(self, typelist):