Eliminate garbage displaying in Find-result fold margin

Fix notepad-plus-plus#6268, close notepad-plus-plus#7721

Author: sasumner

PowerEditor/src/ScitillaComponent/FindReplaceDlg.cpp

@@ -3328,6 +3328,10 @@ void Finder::setFinderStyle()
  }
 
 _scintView.execute(SCI_COLOURISE, 0, -1);
+
+// finder fold style follows user preference but use box when user selects none
+ScintillaViewParams& svp = (ScintillaViewParams&)NppParameters::getInstance().getSVP();
+_scintView.setMakerStyle(svp._folderStyle == FOLDER_STYLE_NONE ? FOLDER_STYLE_BOX : svp._folderStyle);
 }
 
 INT_PTR CALLBACK Finder::run_dlgProc(UINT message, WPARAM wParam, LPARAM lParam)