tests: fix shadowed/unused variable warnings

test/integration/_blockchain.js

@@ -25,7 +25,7 @@ function fundAddress (unspents, outputs, callback) {
     txb.addOutput(x.address || kpAddress, x.value)
   })
 
-  result.inputs.forEach(function (x, i) {
+  result.inputs.forEach(function (_, i) {
     txb.sign(i, keyPair)
   })
 
@@ -37,7 +37,7 @@ function fundAddress (unspents, outputs, callback) {
 
     // FIXME: @blocktrail can be very slow, give it time
     setTimeout(() => {
-      callback(null, outputs.map(function (x, i) {
+      callback(null, outputs.map(function (_, i) {
         return { txId: txId, vout: i }
       }))
     }, 3000)

test/integration/multisig.js

@@ -62,8 +62,8 @@ describe('bitcoinjs-lib (multisig)', function () {
             // check that the above transaction included the intended address
             blockchain.t.addresses.unspents(blockchain.t.RETURN, function (err, unspents) {
               if (err) return callback(err)
-              if (!unspents.some(function (unspent) {
-                return unspent.txId === txId && unspent.value === 1e4
+              if (!unspents.some(function (x) {
+                return x.txId === txId && x.value === 1e4
               })) return callback(new Error('Could not find unspent after broadcast'))
 
               callback()