Revert "Fix Compile Warnings (#5963)"

This reverts commit b83e16dbdd.

Found regressions like auto orientation didn't work anymore after this change, revert it

src/slic3r/GUI/DownloadProgressDialog.cpp

@@ -128,6 +128,7 @@ wxString DownloadProgressDialog::format_text(wxStaticText* st, wxString str, int
 
     wxString out_txt = str;
     wxString count_txt = "";
+    int      new_line_pos = 0;
 
     for (int i = 0; i < str.length(); i++) {
         auto text_size = st->GetTextExtent(count_txt);