fix the compling error caused by tcpinfo of low version
fix the compling error caused by tcpinfo of low version

Summary: my D2097198 break the project relying on old glibc

Test Plan: compling

Reviewed By: wez@fb.com

Subscribers: trunkagent, fugalh, folly-diffs@, jsedgwick, yfeldblum, chalfant

FB internal diff: D2135297

Tasks: 7283522

Signature: t1:2135297:1433791259:8b82b8d9b16da32be54c0dff1214fa20c94840e2

guker/folly,guker/folly,wildinto/folly,Hincoin/folly,PoisonBOx/folly,PPC64/folly,rklabs/folly,tempbottle/folly,hongliangzhao/folly,bowlofstew/folly,leolujuyi/folly,hongliangzhao/folly,bobegir/folly,PPC64/folly,gaoyingie/folly,alexst07/folly,Orvid/folly,leolujuyi/folly,sonnyhu/folly,CJstar/folly,colemancda/folly,SeanRBurton/folly,guker/folly,wildinto/folly,bikong2/folly,charsyam/folly,floxard/folly,nickhen/folly,fw1121/folly,cole14/folly,loversInJapan/folly,rklabs/folly,juniway/folly,fw1121/folly,SeanRBurton/folly,cole14/folly,alexst07/folly,alexst07/folly,tempbottle/folly,guker/folly,SammyK/folly,arg0/folly,guker/folly,lifei/folly,project-zerus/folly,zhiweicai/folly,zhiweicai/folly,xzmagic/folly,bikong2/folly,project-zerus/folly,brunomorishita/folly,Eagle-X/folly,chjp2046/folly,kernelim/folly,sonnyhu/folly,zhiweicai/folly,PoisonBOx/folly,chjp2046/folly,chjp2046/folly,Hincoin/folly,mqeizi/folly,tomhughes/folly,Hincoin/folly,raphaelamorim/folly,arg0/folly,KSreeHarsha/folly,alexst07/folly,renyinew/folly,fw1121/folly,Eagle-X/folly,tempbottle/folly,reddit/folly,PPC64/folly,wildinto/folly,PoisonBOx/folly,alexst07/folly,juniway/folly,CJstar/folly,upsoft/folly,stonegithubs/folly,KSreeHarsha/folly,charsyam/folly,gavioto/folly,project-zerus/folly,bowlofstew/folly,sonnyhu/folly,nickhen/folly,facebook/folly,leolujuyi/folly,gavioto/folly,gavioto/folly,PPC64/folly,project-zerus/folly,bowlofstew/folly,bsampath/folly,Eagle-X/folly,yangjin-unique/folly,theiver9827/folly,leolujuyi/folly,mqeizi/folly,theiver9827/folly,clearlylin/folly,reddit/folly,charsyam/folly,loversInJapan/folly,CJstar/folly,PoisonBOx/folly,stonegithubs/folly,clearlylin/folly,zhiweicai/folly,bsampath/folly,Hincoin/folly,raphaelamorim/folly,constantine001/folly,stonegithubs/folly,upsoft/folly,renyinew/folly,wildinto/folly,xzmagic/folly,PoisonBOx/folly,loversInJapan/folly,gavioto/folly,mqeizi/folly,raphaelamorim/folly,constantine001/folly,floxard/folly,KSreeHarsha/folly,xzmagic/folly,mqeizi/folly,facebook/folly,stonegithubs/folly,yangjin-unique/folly,theiver9827/folly,cole14/folly,tomhughes/folly,sakishum/folly,arg0/folly,colemancda/folly,renyinew/folly,sonnyhu/folly,bobegir/folly,hongliangzhao/folly,rklabs/folly,gaoyingie/folly,bsampath/folly,Eagle-X/folly,gaoyingie/folly,nickhen/folly,lifei/folly,hongliangzhao/folly,nickhen/folly,tempbottle/folly,yangjin-unique/folly,charsyam/folly,floxard/folly,sakishum/folly,shaobz/folly,clearlylin/folly,brunomorishita/folly,gaoyingie/folly,facebook/folly,juniway/folly,tempbottle/folly,facebook/folly,arg0/folly,raphaelamorim/folly,lifei/folly,bsampath/folly,KSreeHarsha/folly,kernelim/folly,sakishum/folly,shaobz/folly,loversInJapan/folly,reddit/folly,upsoft/folly,Hincoin/folly,SammyK/folly,hongliangzhao/folly,upsoft/folly,chjp2046/folly,juniway/folly,tomhughes/folly,tomhughes/folly,bobegir/folly,KSreeHarsha/folly,reddit/folly,brunomorishita/folly,gavioto/folly,SeanRBurton/folly,nickhen/folly,bowlofstew/folly,colemancda/folly,lifei/folly,shaobz/folly,yangjin-unique/folly,stonegithubs/folly,raphaelamorim/folly,xzmagic/folly,bowlofstew/folly,rklabs/folly,SammyK/folly,colemancda/folly,shaobz/folly,yangjin-unique/folly,theiver9827/folly,reddit/folly,Orvid/folly,renyinew/folly,sonnyhu/folly,kernelim/folly,doctaweeks/folly,fw1121/folly,brunomorishita/folly,bikong2/folly,sakishum/folly,mqeizi/folly,Orvid/folly,upsoft/folly,zhiweicai/folly,SeanRBurton/folly,doctaweeks/folly,bsampath/folly,constantine001/folly,theiver9827/folly,kernelim/folly,sakishum/folly,loversInJapan/folly,constantine001/folly,constantine001/folly,colemancda/folly,Eagle-X/folly,lifei/folly,floxard/folly,SammyK/folly,gaoyingie/folly,cole14/folly,cole14/folly,doctaweeks/folly,chjp2046/folly,PPC64/folly,xzmagic/folly,doctaweeks/folly,Orvid/folly,doctaweeks/folly,leolujuyi/folly,clearlylin/folly,arg0/folly,bobegir/folly,Orvid/folly,fw1121/folly,bikong2/folly,SammyK/folly,bikong2/folly,juniway/folly,CJstar/folly,bobegir/folly,facebook/folly,kernelim/folly,CJstar/folly,shaobz/folly,clearlylin/folly,floxard/folly,rklabs/folly,brunomorishita/folly,tomhughes/folly,project-zerus/folly,wildinto/folly,renyinew/folly,SeanRBurton/folly