fixed bug in calc_N50

git-svn-id: http://biopieces.googlecode.com/svn/trunk@1239 74ccb610-7750-0410-82ae-013aeee3265d

diff --git a/bp_bin/calc_N50 b/bp_bin/calc_N50
index 3b7d4e47e7eef35079a51f8b1023079688906a16..a97fe0809a3b9e7367cd01c5907d68717a5afd33 100755 (executable)
--- a/bp_bin/calc_N50
+++ b/bp_bin/calc_N50
@@ -52,7 +52,7 @@ bp.each_record do |record|
   end
 end
 
-bp.out = Stream.write(options[:data_out])
+bp.out = Stream.write(options[:data_out]) if options[:data_out]
 
 count = 0