parse: fix erroneous use of _("")

Fixes xgettext warnings when doing 'make update-po':
gst/parse/grammar.y:217: warning: Empty msgid.  It is reserved by GNU gettext:
                                  gettext("") returns the header entry with
                                  meta information, not the empty string.

diff --git a/gst/parse/grammar.y b/gst/parse/grammar.y
index 3f1a8bc..85d37dd 100644 (file)
--- a/gst/parse/grammar.y
+++ b/gst/parse/grammar.y
@@ -214,12 +214,12 @@ static void  add_missing_element(graph_t *graph,gchar *name){
 #define TRY_SETUP_LINK(l) G_STMT_START { \
    if( (!(l)->src.element) && (!(l)->src.name) ){ \
      SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link has no source [sink=%s@%p]"), \
-       (l)->sink.name ? (l)->sink.name : _(""), \
+       (l)->sink.name ? (l)->sink.name : "", \
        (l)->sink.element); \
      gst_parse_free_link (l); \
    }else if( (!(l)->sink.element) && (!(l)->sink.name) ){ \
      SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link has no sink [source=%s@%p]"), \
-       (l)->src.name ? (l)->src.name :_(""), \
+       (l)->src.name ? (l)->src.name : "", \
        (l)->src.element); \
      gst_parse_free_link (l); \
    }else{ \