[tracker/fixed-cursor] tracker-store: Handle NULL

[Philip Van Hoof <pvanhoof src gnome org>]

commit c50939a75c996eed88efce78e24eb1ac1c8079f3
Author: Philip Van Hoof <philip codeminded be>
Date:   Mon Apr 26 16:17:58 2010 +0200

    tracker-store: Handle NULL

 src/tracker-store/tracker-resources.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/tracker-store/tracker-resources.c b/src/tracker-store/tracker-resources.c
index 01179bf..2d0a195 100644
--- a/src/tracker-store/tracker-resources.c
+++ b/src/tracker-store/tracker-resources.c
@@ -296,6 +296,9 @@ query_inthread (TrackerDBCursor *cursor, GError *error, gpointer user_data)
 			const gchar *result_str;
 			result_str = tracker_db_cursor_get_string (cursor, i);
 
+			if (result_str == NULL)
+				result_str = "";
+
 			dbus_message_iter_append_basic (&cols_iter, DBUS_TYPE_STRING, &result_str);
 
 			if (length > DBUS_ARBITRARY_MAX_MSG_SIZE) {