fix: skip error handlers if no error

index.js

@@ -149,6 +149,12 @@ Kareem.prototype.execPost = function(name, context, args, options, callback) {
         next();
       }
     } else {
+      if (post.length === args.length + 2) {
+        if (++currentPost >= numPosts) {
+          return callback.apply(null, [null].concat(args));
+        }
+        next();
+      }
       if (post.length === args.length + 1) {
         post.apply(context, args.concat(function(error) {
           if (error) {

test/wrap.test.js

@@ -174,6 +174,27 @@ describe('wrap()', function() {
       { useErrorHandlers: true });
   });
 
+  it('error handlers with no error', function(done) {
+    hooks.post('cook', function(error, callback) {
+      callback(new Error('another error occurred'));
+    });
+
+    var args = [];
+    args.push(function(error) {
+      assert.ifError(error);
+      done();
+    });
+
+    hooks.wrap(
+      'cook',
+      function(callback) {
+        callback();
+      },
+      null,
+      args,
+      { useErrorHandlers: true });
+  });
+
   it('works with no args', function(done) {
     hooks.pre('cook', function(done) {
       done();