Fix the unknown licenses error message

Fixing branding in the readme

README.md

@@ -2,7 +2,7 @@
 
 This action scans your pull requests for dependency changes and will raise an error if any new dependencies have existing vulnerabilities. The action is supported by an [API endpoint](https://docs.github.com/en/rest/reference/dependency-graph#dependency-review) that diffs the dependencies between any two revisions.
 
-The action is available for all public repositories, as well as private repositories that have Github Advanced Security licensed.
+The action is available for all public repositories, as well as private repositories that have GitHub Advanced Security licensed.
 
 <img width="854" alt="Screen Shot 2022-03-31 at 1 10 51 PM" src="https://user-images.githubusercontent.com/2161/161042286-b22d7dd3-13cb-458d-8744-ce70ed9bf562.png">
 

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(