add no-op comment to make it more clear

Author: sokra

lib/dependencies/HarmonyCompatibilityDependency.js

@@ -32,7 +32,9 @@ HarmonyCompatibilityDependency.Template = class HarmonyExportDependencyTemplate
 	 * @param {DependencyTemplates} dependencyTemplates the dependency templates
 	 * @returns {void}
 	 */
-	apply(dependency, source, runtimeTemplate, dependencyTemplates) {}
+	apply(dependency, source, runtimeTemplate, dependencyTemplates) {
+		// no-op
+	}
 
 	/**
 	 * @param {Dependency} dependency the dependency for which the template should be applied