get resources dir from spdxlicenses

src/Composer/Compiler.php

@@ -13,6 +13,7 @@
 namespace Composer;
 
 use Composer\Json\JsonFile;
+use Composer\Spdx\SpdxLicenses;
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\Process\Process;
 use Seld\PharUtils\Timestamps;
@@ -96,7 +97,7 @@ class Compiler
         $finder->files()
             ->name('*.json')
             ->in(__DIR__.'/../../res')
-            ->in(__DIR__.'/../../vendor/composer/spdx-licenses/res/')
+            ->in(SpdxLicenses::getResourcesDir())
             ->sort($finderSort)
         ;