From a896dbb15915074887aab595cb22a154cf54a311 Mon Sep 17 00:00:00 2001
From: Daniel Blankenberg <dan@bx.psu.edu>
Date: Mon, 24 Nov 2008 11:46:45 -0500
Subject: [PATCH] Fix for setting metadata on a history item designated as a
 MAF file, but is not a valid MAF.

---
 lib/galaxy/datatypes/sequence.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/galaxy/datatypes/sequence.py b/lib/galaxy/datatypes/sequence.py
index 0d90ad72f38..670a0801828 100644
--- a/lib/galaxy/datatypes/sequence.py
+++ b/lib/galaxy/datatypes/sequence.py
@@ -208,9 +208,9 @@ class Maf( Alignment ):
         
         species = []
         species_chromosomes = {}
-        maf_reader = bx.align.maf.Reader( open( dataset.file_name ) )
         indexes = bx.interval_index_file.Indexes()
         try:
+            maf_reader = bx.align.maf.Reader( open( dataset.file_name ) )
             while True:
                 pos = maf_reader.file.tell()
                 block = maf_reader.next()