fix: UseArrowFunctionsFixer - do not produce two consecutive whitespace tokens (#9151)

Author: kubawerlos

src/Fixer/FunctionNotation/UseArrowFunctionsFixer.php

@@ -169,7 +169,9 @@ private function transform(Tokens $tokens, int $index, ?int $useStart, ?int $use
             $tokensToInsert[] = new Token([\T_STRING, 'null']);
         }
 
-        $tokens->clearRange($semicolon, $braceClose);
+        $tokens->clearRange($semicolon, $braceClose - 1);
+        $tokens->clearTokenAndMergeSurroundingWhitespace($braceClose);
+
         $tokens->clearRange($braceOpen + 1, $return);
         $tokens->overrideRange($braceOpen, $braceOpen, $tokensToInsert);
 

tests/Fixer/FunctionNotation/UseArrowFunctionsFixerTest.php

@@ -229,5 +229,20 @@ public static function provideFixCases(): iterable
                 };
                 PHP,
         ];
+
+        yield [
+            '<?php
+            foo(
+                fn () => 42
+                        '.'
+            );',
+            '<?php
+            foo(
+                function () {
+                    return 42
+                        ;
+                }
+            );',
+        ];
     }
 }