Minor code refactor (#397)

Author: jamesgeorge007

lib/open-report.js

@@ -38,9 +38,6 @@ const files = (report, predicate) => report.results
 	.map(result => resultToFile(result));
 
 module.exports = report => {
-	if (report.errorCount > 0) {
-		openEditor(files(report, result => result.errorCount > 0));
-	} else if (report.warningCount > 0) {
-		openEditor(files(report, result => result.warningCount > 0));
-	}
+	const count = report.errorCount > 0 ? 'errorCount' : 'warningCount';
+	openEditor(files(report, result => result[count] > 0));
 };