Merge pull request #1200 from dcousens/patch-1

sighash: remove dead branch

lib/transaction/sighash.js

@@ -62,12 +62,9 @@ var sighash = function sighash(transaction, sighashType, inputNumber, subscript)
   } else if ((sighashType & 31) === Signature.SIGHASH_SINGLE) {
     // The SIGHASH_SINGLE bug.
     // https://bitcointalk.org/index.php?topic=260595.0
-    if (inputNumber > txcopy.outputs.length - 1) {
+    if (inputNumber >= txcopy.outputs.length) {
       return new Buffer(SIGHASH_SINGLE_BUG, 'hex');
     }
-    if (txcopy.outputs.length <= inputNumber) {
-      throw new Error('Missing output to sign');
-    }
 
     txcopy.outputs.length = inputNumber + 1;