Stricter rc check for literal dtype URI.

src/codec/codec_ttl.c

@@ -78,7 +78,7 @@ term_to_ttl (const VOLK_Term *term, char **out_p)
             ) {
                 md_rc = VOLK_nsmap_denormalize_uri (
                         term->datatype->data, &metadata);
-                PRCCK (md_rc);
+                RCCK (md_rc);
                 unsigned padding = 0;
 
                 // Shorten numeric and boolean types.