Fix the unknown licenses error message

dist/index.js

@@ -244,6 +244,9 @@ function printLicensesError(changes, licenses) {
     }
 }
 function printNullLicenses(changes) {
+    if (changes.length === 0) {
+        return;
+    }
     core.info('\nWe could not detect a license for the following dependencies:\n');
     for (const change of changes) {
         core.info(`${ansi_styles_1.default.bold.open}${change.manifest} » ${change.name}@${change.version}${ansi_styles_1.default.bold.close}`);

src/main.ts

@@ -139,6 +139,10 @@ function printLicensesError(
 }
 
 function printNullLicenses(changes: Array<Change>): void {
+  if (changes.length === 0) {
+    return
+  }
+
   core.info('\nWe could not detect a license for the following dependencies:\n')
   for (const change of changes) {
     core.info(