Adds missing short-circuit 🙈

Author: pirelenito

lib/write-commithash-file.js

@@ -4,7 +4,7 @@ var removeEmptyLines = require('./helpers/remove-empty-lines.js')
 module.exports = function writeCommithashFile (compiler) {
   compiler.plugin('emit', function (compilation, callback) {
     exec('git rev-parse HEAD', function (err, stdout) {
-      if (err) { callback(err) }
+      if (err) { return callback(err) }
       const version = removeEmptyLines(stdout)
 
       compilation.assets['COMMITHASH'] = {

lib/write-version-file.js

@@ -4,7 +4,7 @@ var removeEmptyLines = require('./helpers/remove-empty-lines.js')
 module.exports = function writeVersionFile (compiler) {
   compiler.plugin('emit', function (compilation, callback) {
     exec('git describe', function (err, stdout) {
-      if (err) { callback(err) }
+      if (err) { return callback(err) }
       const version = removeEmptyLines(stdout)
 
       compilation.assets['VERSION'] = {