Remove unused local variable

Author: alamirault

DebugClassLoader.php

@@ -758,7 +758,7 @@ private function darwinRealpath(string $real): string
                 if ('.' !== $f[0]) {
                     $dirFiles[$f] = $f;
                     if ($f === $file) {
-                        $kFile = $k = $file;
+                        $kFile = $file;
                     } elseif ($f !== $k = strtolower($f)) {
                         $dirFiles[$k] = $f;
                     }

ErrorHandler.php

@@ -452,11 +452,10 @@ public function handleError(int $type, string $message, string $file, int $line)
 
             if ($throw || $this->tracedErrors & $type) {
                 $backtrace = $errorAsException->getTrace();
-                $lightTrace = $this->cleanTrace($backtrace, $type, $file, $line, $throw);
-                ($this->configureException)($errorAsException, $lightTrace, $file, $line);
+                $backtrace = $this->cleanTrace($backtrace, $type, $file, $line, $throw);
+                ($this->configureException)($errorAsException, $backtrace, $file, $line);
             } else {
                 ($this->configureException)($errorAsException, []);
-                $backtrace = [];
             }
         }