[tracker/tracker-1.4] Fix small memory leak

[Carlos Garnacho <carlosg src gnome org>]

commit b38323b38df7a1d73e401f5f9e5bdb39ceb2f6b1
Author: Philip Van Hoof <philip codeminded be>
Date:   Mon Jan 11 11:19:36 2016 +0100

    Fix small memory leak

 src/tracker-extract/tracker-extract-msoffice.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/tracker-extract/tracker-extract-msoffice.c b/src/tracker-extract/tracker-extract-msoffice.c
index 595dbc0..b175320 100644
--- a/src/tracker-extract/tracker-extract-msoffice.c
+++ b/src/tracker-extract/tracker-extract-msoffice.c
@@ -1372,6 +1372,7 @@ xls_get_extended_record_string (GsfInput  *stream,
                /* Go to next chunk */
                i++;
        }
+       g_free(buffer);
 }
 
 /**