Ignore IOError on closing connection.
Ignore IOError on closing connection.

mosquito/Tornado-MySQL,wraziens/PyMySQL,jheld/PyMySQL,MartinThoma/PyMySQL,eibanez/PyMySQL,yeyinzhu3211/PyMySQL,xjzhou/PyMySQL,xjzhou/PyMySQL,Ting-y/PyMySQL,aio-libs/aiomysql,boneyao/PyMySQL,yeyinzhu3211/PyMySQL,nju520/PyMySQL,PyMySQL/Tornado-MySQL,lzedl/PyMySQL,methane/PyMySQL,eibanez/PyMySQL,jwjohns/PyMySQL,Geoion/Tornado-MySQL,lzedl/PyMySQL,pymysql/pymysql,wraziens/PyMySQL,modulexcite/PyMySQL,NunoEdgarGub1/PyMySQL,PyMySQL/PyMySQL,anson-tang/PyMySQL,pulsar314/Tornado-MySQL,DashaChuk/PyMySQL