update geshi setup check

diff --git a/src/phorkie/SetupCheck.php b/src/phorkie/SetupCheck.php
index 3762457214a603a08c391e624ac0839776c83b15..62bbf19c54f3392650815849125f5b0d8d8f0d4f 100644 (file)
--- a/src/phorkie/SetupCheck.php
+++ b/src/phorkie/SetupCheck.php
@@ -46,11 +46,13 @@ class SetupCheck
             }
         }
 
-        $geshi = stream_resolve_include_path(
-            $GLOBALS['phorkie']['cfg']['geshi']
-        );
-        if ($geshi === false) {
-            $this->fail('GeSHi not available');
+        if (!class_exists('GeSHi', true)) {
+            $geshi = stream_resolve_include_path(
+                $GLOBALS['phorkie']['cfg']['geshi']
+            );
+            if ($geshi === false) {
+                $this->fail('GeSHi not available');
+            }
         }
 
         $markdown = stream_resolve_include_path('markdown.php');