fix initial creation of lockfile

Author: sokra

.gitignore

@@ -4,6 +4,7 @@
 /test/fixtures/temp-*
 /test/temp
 /test/ChangesAndRemovals
+/test/**/dev-defaults.webpack.lock
 /benchmark/js
 /benchmark/fixtures
 /examples/**/dist

lib/schemes/HttpUriPlugin.js

@@ -1044,6 +1044,7 @@ Run build with un-frozen lockfile to automatically fix lockfile.`
 							inProgressWrite.push(runWrite);
 						} else {
 							inProgressWrite = [];
+							runWrite();
 						}
 					}
 				);

test/configCases/asset-modules/http-url/dev-defaults.webpack.lock

@@ -0,0 +1,15 @@
+const fs = require("fs");
+const path = require("path");
+
+module.exports = {
+	beforeExecute() {
+		try {
+			fs.unlinkSync(path.join(__dirname, "dev-defaults.webpack.lock"));
+		} catch (e) {}
+	},
+	afterExecute() {
+		try {
+			fs.unlinkSync(path.join(__dirname, "dev-defaults.webpack.lock"));
+		} catch (e) {}
+	}
+};