Utils: Fix line ending conversion in FileReader

FilePath::fileContents always uses "binary" mode when reading files.

FileReader::fetch previously used QFile with QIODevice::Text mode to
read (local) files, which converts \r\n to \n. This patch re-introduces
the conversion.

Fixes: QTCREATORBUG-29040
Change-Id: I0a16b056bea456512e6526497b725c73b0a1bd11
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/libs/utils/fileutils.cpp

@@ -62,6 +62,10 @@ bool FileReader::fetch(const FilePath &filePath, QIODevice::OpenMode mode)
         return false;
     }
     m_data = *contents;
+
+    if (mode & QIODevice::Text)
+        m_data = m_data.replace("\r\n", "\n");
+
     return true;
 }