fixes for rust 0.6HEADmaster

1 files changed, 1 insertions, 1 deletions

diff --git a/GC.rs b/GC.rs
index 11f18b3..4560366 100644
--- a/GC.rs
+++ b/GC.rs
@@ -3,7 +3,7 @@ use rosalind::dna::gc_content;
 use rosalind::fasta::FASTAReader;
 
 fn main() {
-    let reader = FASTAReader::new();
+    let mut reader = FASTAReader::new();
     let mut (max_name, max_gc) = (~"", -1f);
     for reader.each_sequence |name, dna| {
         let gc_content = gc_content(dna);