[tracker] Fixes libtracker-extract documentation example which was incorrect

[Martyn James Russell <mr src gnome org>]

commit 054a140a2749e7b213a0db889a20a5e2ade92512
Author: Michele Tameni <michele tameni it>
Date:   Wed Feb 17 10:50:02 2010 +0000

    Fixes libtracker-extract documentation example which was incorrect

 src/libtracker-extract/tracker-extract.h |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/src/libtracker-extract/tracker-extract.h b/src/libtracker-extract/tracker-extract.h
index 236398a..88eece1 100644
--- a/src/libtracker-extract/tracker-extract.h
+++ b/src/libtracker-extract/tracker-extract.h
@@ -33,7 +33,7 @@ G_BEGIN_DECLS
  * @include: libtracker-extract/tracker-extract.h
  *
  * The libtracker-extract library is the foundation for Tracker
- * metadata extraction of embedded data in files. 
+ * metadata extraction of embedded data in files.
  *
  * Tracker comes with extractors written for the most common file
  * types (like MP3, JPEG, PNG, etc.), however, for more special cases,
@@ -44,18 +44,19 @@ G_BEGIN_DECLS
  * <example>
  * <title>Basic extractor example</title>
  * An example of how to write an extractor to retrieve PNG embedded
- * metadata. 
+ * metadata.
  * <programlisting>
  *  static void extract_png (const gchar          *filename,
+ *                           TrackerSparqlBuilder *preupdate,
  *                           TrackerSparqlBuilder *metadata);
- *  
+ *
  *  /&ast; Set functions to use to extract different mime types. &ast;/
  *  static TrackerExtractData extract_data[] = {
  *          { "image/png",  extract_png },
  *          { "sketch/png", extract_png },
  *          { NULL, NULL }
  *  };
- * 
+ *
  *  static void
  *  extract_png (const gchar          *uri,
  *               TrackerSparqlBuilder *preupdate,
@@ -118,7 +119,7 @@ G_BEGIN_DECLS
  * Since: 0.8
  **/
 typedef void (*TrackerExtractMimeFunc) (const gchar          *uri,
-					TrackerSparqlBuilder *preupdate,
+                                        TrackerSparqlBuilder *preupdate,
                                         TrackerSparqlBuilder *metadata);
 
 /**