[gnome-builder] xml-pack: Fix rng schema validation

[Sébastien Lafargue <slafargue src gnome org>]

commit ef2fcd6d42121b63b07c257a54e3ff271ba3f9e2
Author: albfan <albertofanjul gmail com>
Date:   Sun May 13 12:57:30 2018 +0200

    xml-pack: Fix rng schema validation

 src/plugins/xml-pack/ide-xml-validator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/xml-pack/ide-xml-validator.c b/src/plugins/xml-pack/ide-xml-validator.c
index a0a19664c..9bc06047f 100644
--- a/src/plugins/xml-pack/ide-xml-validator.c
+++ b/src/plugins/xml-pack/ide-xml-validator.c
@@ -193,7 +193,7 @@ ide_xml_validator_validate (IdeXmlValidator   *self,
                                 (xmlRelaxNGValidityWarningFunc)ide_xml_valid_warning,
                                 &state);
 
-      ret = xmlRelaxNGValidateDoc (rng_valid_context, doc);
+      ret = (xmlRelaxNGValidateDoc (rng_valid_context, doc) == 0);
       xmlRelaxNGFreeValidCtxt (rng_valid_context);
     }
   else