ACP2E-517: fix deploy for child theme files in compact mode

Author: alzota

app/code/Magento/Deploy/Package/Processor/PreProcessor/Less.php

@@ -151,7 +151,9 @@ private function inParentFiles($fileName, $parentFile, $map)
                 return true;
             } else {
                 foreach ($map[$parentFile] as $pFile) {
-                    return $this->inParentFiles($fileName, $pFile, $map);
+                    if ($this->inParentFiles($fileName, $pFile, $map)) {
+                        return true;
+                    }
                 }
             }
         }