fix to crash on MacBook Air (thanks to Tomoo Mizukami)
fix to crash on MacBook Air (thanks to Tomoo Mizukami)

yangchenghu/CotEditor,angi2/CotEditor,eric-seekas/CotEditor,yangchenghu/CotEditor,onevcat/CotEditor,eric-seekas/CotEditor,uchuugaka/CotEditor,eric-seekas/CotEditor,uchuugaka/CotEditor,yangchenghu/CotEditor,eric-seekas/CotEditor,uchuugaka/CotEditor,angi2/CotEditor,onevcat/CotEditor,onevcat/CotEditor,angi2/CotEditor,uchuugaka/CotEditor,angi2/CotEditor,angi2/CotEditor,angi2/CotEditor,uchuugaka/CotEditor,uchuugaka/CotEditor,eric-seekas/CotEditor,yangchenghu/CotEditor,yangchenghu/CotEditor,eric-seekas/CotEditor,eric-seekas/CotEditor,angi2/CotEditor,uchuugaka/CotEditor,eric-seekas/CotEditor,uchuugaka/CotEditor