[gtk+/wip/otte/shader: 247/269] gsksl: Don't pass matcher to function argument parser

[Benjamin Otte <otte src gnome org>]

commit db18691d38c172b5af9146358e8e478c16de5822
Author: Benjamin Otte <otte redhat com>
Date:   Tue Oct 17 20:00:51 2017 +0200

    gsksl: Don't pass matcher to function argument parser
    
    ... when an error has occured. That way we avoid duplicate error
    messages for nonexisting functions.

 gsk/gskslexpression.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/gsk/gskslexpression.c b/gsk/gskslexpression.c
index 231d9ad..21cb1d1 100644
--- a/gsk/gskslexpression.c
+++ b/gsk/gskslexpression.c
@@ -1980,9 +1980,12 @@ gsk_sl_expression_parse_primary (GskSlScope        *scope,
             gsk_sl_scope_match_function (scope, &matcher, name);
             
             if (!gsk_sl_function_matcher_has_matches (&matcher))
-              gsk_sl_preprocessor_error (stream, DECLARATION, "No function named \"%s\".", name);
-            
-            expr = gsk_sl_expression_parse_function_call (scope, stream, &matcher);
+              {
+                gsk_sl_preprocessor_error (stream, DECLARATION, "No function named \"%s\".", name);
+                expr = gsk_sl_expression_parse_function_call (scope, stream, NULL);
+              }
+            else
+              expr = gsk_sl_expression_parse_function_call (scope, stream, &matcher);
 
             gsk_sl_function_matcher_finish (&matcher);
           }