Remove XML indentation

src/Spout/Writer/ODS/Helper/FileSystemHelper.php

@@ -183,17 +183,12 @@ EOD;
         $contentXmlFileContents = <<<EOD
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <office:document-content office:version="1.2" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:msoxl="http://schemas.microsoft.com/office/excel/formula" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:xlink="http://www.w3.org/1999/xlink">
-
 EOD;
 
         $contentXmlFileContents .= $styleHelper->getContentXmlFontFaceSectionContent();
         $contentXmlFileContents .= $styleHelper->getContentXmlAutomaticStylesSectionContent(count($worksheets));
 
-        $contentXmlFileContents .= <<<EOD
-    <office:body>
-        <office:spreadsheet>
-
-EOD;
+        $contentXmlFileContents .= '<office:body><office:spreadsheet>';
 
         $this->createFileWithContents($this->rootFolder, self::CONTENT_XML_FILE_NAME, $contentXmlFileContents);
 
@@ -203,19 +198,15 @@ EOD;
 
         foreach ($worksheets as $worksheet) {
             // write the "<table:table>" node, with the final sheet's name
-            fwrite($contentXmlHandle, $worksheet->getTableElementStartAsString() . PHP_EOL);
+            fwrite($contentXmlHandle, $worksheet->getTableElementStartAsString());
 
             $worksheetFilePath = $worksheet->getWorksheetFilePath();
             $this->copyFileContentsToTarget($worksheetFilePath, $contentXmlHandle);
 
-            fwrite($contentXmlHandle, '</table:table>' . PHP_EOL);
+            fwrite($contentXmlHandle, '</table:table>');
         }
 
-        $contentXmlFileContents = <<<EOD
-        </office:spreadsheet>
-    </office:body>
-</office:document-content>
-EOD;
+        $contentXmlFileContents = '</office:spreadsheet></office:body></office:document-content>';
 
         fwrite($contentXmlHandle, $contentXmlFileContents);
         fclose($contentXmlHandle);