[protocol][fs] fix line ending for non-atari systems.

Author: tschak909

lib/device/rs232/network.cpp

@@ -55,7 +55,7 @@ rs232Network::rs232Network()
     transmitBuffer->clear();
     specialBuffer->clear();
 
-    json.setLineEnding("\x9B"); // use ATASCII EOL for JSON records
+    json.setLineEnding("\r\n"); // use ATASCII EOL for JSON records
 }
 
 /**

lib/network-protocol/FS.cpp

@@ -74,6 +74,9 @@ bool NetworkProtocolFS::open_file()
 bool NetworkProtocolFS::open_dir()
 {
     openMode = DIR;
+#ifndef BUILD_ATARI
+    this->setLineEnding("\r\n");
+#endif /* BUILD_RS232 */
     dirBuffer.clear();
     dirBuffer.shrink_to_fit();
     update_dir_filename(opened_url);