handle location being null

source/changelog.txt

@@ -10,6 +10,7 @@
 #### Fixed
 - Mark event-related data as non-translatable within plugin
 - Add version number to script registration to break browser caching
+- Handle location being null
 #### Security
 
 ### [1.2.0]

source/includes/Formatter.php

@@ -26,7 +26,7 @@ final class Formatter
     return $dateText;
   }
 
-  public static function format_location(string $description, string $locality): string {
+  public static function format_location(string $description, ?string $locality): string {
     $location = '';
     if ($description && trim($description)) {
       $location .= trim($description);

tests/FormatterTest.php

@@ -42,6 +42,10 @@ final class FormatterTest extends PHPUnit\Framework\TestCase
     $this->assertSame('a', Formatter::format_location('a', ''));
   }
 
+  public function testLocationFormatDescriptionOnlyWithNull(): void {
+    $this->assertSame('a', Formatter::format_location('a', null));
+  }
+
   public function testLocationFormatDescriptionWithSpaceOnly(): void {
     $this->assertSame('', Formatter::format_location(' ', ''));
   }