[tracker] docs: Make error message actually useful

[Carlos Garnacho <carlosg src gnome org>]

commit c297ebd28970170427456475e4eb3cc679799f0c
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Jan 27 12:29:25 2017 +0100

    docs: Make error message actually useful
    
    It's an error, not a stroke.

 docs/tools/ttl_loader.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/docs/tools/ttl_loader.c b/docs/tools/ttl_loader.c
index 089c622..02187fb 100644
--- a/docs/tools/ttl_loader.c
+++ b/docs/tools/ttl_loader.c
@@ -185,7 +185,7 @@ load_in_memory (Ontology    *ontology,
                        if (prop) {
                                prop->description = g_strdup (turtle_object);
                        } else {
-                               g_error ("UHUMMM %s", turtle_subject);
+                               g_error ("Error in comment (%s doesn't exist)", turtle_subject);
                        }
                }