guard against recycled bitmaps
guard against recycled bitmaps

dankito/TextFairyPlugin,sachinxagrawal/testocr,dankito/TextFairyPlugin,renard314/textfairy,hujiaweibujidao/textfairy,renard314/textfairy,dankito/TextFairyPlugin,renard314/textfairy,renard314/textfairy,sachinxagrawal/testocr,hujiaweibujidao/textfairy,dankito/TextFairyPlugin,dankito/TextFairyPlugin,hujiaweibujidao/textfairy,renard314/textfairy,renard314/textfairy,sachinxagrawal/testocr,hujiaweibujidao/textfairy,sachinxagrawal/testocr,sachinxagrawal/testocr,renard314/textfairy,renard314/textfairy,hujiaweibujidao/textfairy