error, qerror: drop QDict member

Used to store error information, but it's unused now.
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>

error.c

@@ -19,7 +19,6 @@
 
 struct Error
 {
-    QDict *obj;
     char *msg;
     ErrorClass err_class;
 };
@@ -51,8 +50,6 @@ Error *error_copy(const Error *err)
     err_new = g_malloc0(sizeof(*err));
     err_new->msg = g_strdup(err->msg);
     err_new->err_class = err->err_class;
-    err_new->obj = err->obj;
-    QINCREF(err_new->obj);
 
     return err_new;
 }
@@ -75,7 +72,6 @@ const char *error_get_pretty(Error *err)
 void error_free(Error *err)
 {
     if (err) {
-        QDECREF(err->obj);
         g_free(err->msg);
         g_free(err);
     }

qerror.c

@@ -100,7 +100,6 @@ void qerror_report(ErrorClass eclass, const char *fmt, ...)
 /* Evil... */
 struct Error
 {
-    QDict *obj;
     char *msg;
     ErrorClass err_class;
 };
@@ -111,8 +110,6 @@ void qerror_report_err(Error *err)
 
     qerr = qerror_new();
     loc_save(&qerr->loc);
-    QINCREF(err->obj);
-    qerr->error = err->obj;
     qerr->err_msg = g_strdup(err->msg);
     qerr->err_class = err->err_class;
 
@@ -154,7 +151,6 @@ static void qerror_destroy_obj(QObject *obj)
     assert(obj != NULL);
     qerr = qobject_to_qerror(obj);
 
-    QDECREF(qerr->error);
     g_free(qerr->err_msg);
     g_free(qerr);
 }

qerror.h

@@ -21,7 +21,6 @@
 
 typedef struct QError {
     QObject_HEAD;
-    QDict *error;
     Location loc;
     char *err_msg;
     ErrorClass err_class;