Fix clover file upload (#21)

* Update CloverParser.php

* fix correctly the bug with file

Author: Grummfy

src/Codacy/Coverage/Parser/CloverParser.php

@@ -91,7 +91,7 @@ private function makeFileReportsFromPackages(\SimpleXMLElement $node, $fileRepor
     {
         // iterate all packages
         foreach ($node as $package) {
-            $fileReports = $this->makeFileReportsFromFiles($package, $fileReports);
+            $fileReports = $this->makeFileReportsFromFiles($package->file, $fileReports);
         }
         return $fileReports;
     }