fix(bin): use compiler.close API correctly for stats

This fixes #762 ISSUES CLOSED: #762

Author: TheLarkInn

bin/cli.js

@@ -251,7 +251,7 @@ For more information, see https://webpack.js.org/api/cli/.`);
 const stdout = argv.silent
 ? {
 write: () => {}
- } // eslint-disable-line
+} // eslint-disable-line
 : process.stdout;
 
 function ifArg(name, fn, init) {
@@ -488,13 +488,18 @@ For more information, see https://webpack.js.org/api/cli/.`);
 }
 compiler.watch(watchOptions, compilerCallback);
 if (outputOptions.infoVerbosity !== "none") console.error("\nwebpack is watching the files…\n");
-if (compiler.close) compiler.close(compilerCallback);
 } else {
-compiler.run(compilerCallback);
-if (compiler.close) compiler.close(compilerCallback);
+compiler.run((err, stats) => {
+if (compiler.close) {
+compiler.close(err2 => {
+compilerCallback(err || err2, stats);
+});
+} else {
+compilerCallback(err, stats);
+}
+});
 }
 }
-
 processOptions(options);
 });
 })();