[gtk/4.0-backports: 44/53] css: Drop a bit of unreachable code

[Matthias Clasen <matthiasc src gnome org>]

commit 284dd6aa7e286d5a7d55113d96fd46498204170f
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Feb 4 00:39:34 2021 -0500

    css: Drop a bit of unreachable code
    
    We never get here. The compiler says so.
    
    Pointed out in https://www.viva64.com/en/b/0793/

 gtk/gtkcssselector.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
---
diff --git a/gtk/gtkcssselector.c b/gtk/gtkcssselector.c
index f04a6fe7c5..951fbd1060 100644
--- a/gtk/gtkcssselector.c
+++ b/gtk/gtkcssselector.c
@@ -1073,11 +1073,8 @@ parse_n_plus_b (GtkCssParser *parser,
       *a = 0;
       return TRUE;
     }
-  
-  gtk_css_parser_error_syntax (parser, "Not a valid an+b type");
-  return FALSE;
 }
-                
+
 static gboolean
 parse_a_n_plus_b (GtkCssParser *parser,
                   int           seen_sign,