Add util.pitch.

lib/common/util.js

@@ -22,6 +22,19 @@ function Hash(properties) {
 
 Hash.prototype = Object.create(null);
 
+/**
+ * A method that throws any error it receives.
+ *
+ * @memberOf util
+ * @param {Object} [error] The error object.
+ */
+function pitch(error) {
+  if (error != null) {
+    throw error;
+  }
+}
+
 module.exports = {
-  'Hash': Hash
+  'Hash': Hash,
+  'pitch': pitch
 };