fix: earlier return

Author: VincentLanglet

src/Metadata/Resource/Factory/PhpDocResourceMetadataCollectionFactory.php

@@ -126,6 +126,10 @@ private function getDocBlock(string $class): ?PhpDocNode
             return $this->docBlocks[$class];
         }
 
+        if (!$this->phpDocParser || !$this->lexer) {
+            return null;
+        }
+
         try {
             $reflectionClass = new \ReflectionClass($class);
         } catch (\ReflectionException) {
@@ -137,10 +141,6 @@ private function getDocBlock(string $class): ?PhpDocNode
             return null;
         }
 
-        if (!$this->phpDocParser || !$this->lexer) {
-            return null;
-        }
-
         $tokens = new TokenIterator($this->lexer->tokenize($rawDocNode));
         $phpDocNode = $this->phpDocParser->parse($tokens);
         $tokens->consumeTokenType(Lexer::TOKEN_END);