paranoia: Don't return -1 as PID in error cases
paranoia: Don't return -1 as PID in error cases

I have seen a few times, when kill() was called for this
value on error paths and nobody survived except the init process.

man 2 kill
If pid equals -1, then sig is sent to every process for which the call‐
ing  process  has  permission  to  send  signals,  except for process 1
(init), but see below.

Signed-off-by: Andrey Vagin <74c05afa918858348d6db8037d82fa8124870113@openvz.org>

mYmNeo/runc,ChengTiesheng/runc,mheon/runc,HardikDR/runc,abduld/runc,inatatsu/runc,tangkun75/libcontainer,mheon/runc,meihuabo/runc,abduld/runc,xiaochenshen/runc,han-wang/runc,wangkirin/runc,subuser-security/runc,ycaihua/libcontainer,cloudfoundry-incubator/runc,cyphar/runc,docker/libcontainer,dieface/runc,BrickXu/libcontainer,ekuric/runc,ycaihua/runc,willmtemple/runc,avagin/runc,dqminh/runc,nkwilson/runc,jwuwork/runc,lizf-os/runc,InformatiQ/runc,liuwharton/runc,fabiokung/runc,kolyshkin/runc,dqminh/libcontainer,kimh/runc,keloyang/libcontainer,fabiokung/runc,whosthatknocking/runc,rajasec/runc,albertoleal/runc,aidanhs/runc,booyaa/runc,marcosnils/runc,rhatdan/libcontainer,adrianreber/runc,clnperez/runc,cloudfoundry-incubator/runc,jhjeong-kr/runc,rhatdan/runc,dqminh/runc,dqminh/libcontainer,Mashimiao/libcontainer,ZJU-SEL/runc,avagin/runc,adrianreber/runc,estesp/libcontainer,estesp/runc,gitido/runc,opencontainers/runc,mapk0y/runc,YujiOshima/runc,mheon/libcontainer,ChengTiesheng/runc,jwuwork/runc,hxfeng/runc,willmtemple/runc,Microsoft/libcontainer,sunyuan3/runc,rhatdan/libcontainer,mrunalp/runc,crosbymichael/libcontainer,liuwharton/runc,LK4D4/runc,rootfs/runc,calavera/runc,navidshaikh/runc,laijs/runc,subuser-security/runc,gitido/runc,mrunalp/runc,cxxly/runc,meihuabo/runc,BrickXu/libcontainer,justincormack/runc,vbatts/runc,opencontainers/runc,LTD-Beget/libcontainer,balajibr/runc,shenxiaochen/libcontainer,kimh/runc,stefanberger/runc,boucher/runc,marcosnils/runc,vbatts/runc,crosbymichael/runc,albertoleal/runc,boucher/runc,inatatsu/runc,justincormack/runc,hqhq/runc,booyaa/runc,albertoleal/runc,fabiokung/runc,ZJU-SEL/runc,mikebrow/runc,zenlinTechnofreak/runc,axsh/runc,rajasec/runc,calavera/runc,estesp/libcontainer,han-wang/runc,mYmNeo/runc,estesp/runc,intfrr/runc,clnperez/runc,aidanhs/runc,LK4D4/runc,WeiZhang555/runc,gwoo/runc,rhatdan/libcontainer,coolljt0725/runc,Mashimiao/libcontainer,nkwilson/runc,chenchun/runc,wking/runc,tangkun75/libcontainer,hqhq/libcontainer,whuwxl/libcontainer,LTD-Beget/libcontainer,cloudfoundry-incubator/runc,mheon/libcontainer,sunyuan3/runc,carlye566/runc,laijs/runc,dqminh/libcontainer,axsh/runc,han-wang/runc,mikebrow/runc,shenxiaochen/libcontainer,zhangyancoder/libcontainer,ycaihua/runc,w4ngyi/libcontainer,docker/runc,maxamillion/runc,cyphar/runc,wcwxyz/runc,boucher/libcontainer,talwai/runc,inatatsu/runc,clnperez/runc,whuwxl/libcontainer,aidanhs/runc,thaJeztah/libcontainer,carlye566/runc,jhjeong-kr/runc,rsampaio/runc,hqhq/runc,WeiZhang555/runc,thaJeztah/libcontainer,rhatdan/runc,opencontainers/runc,dieface/runc,ZJU-SEL/runc,jhowardmsft/runc,kimh/runc,runcom/libcontainer,cyphar/runc,ycaihua/runc,wangkirin/runc,docker/libcontainer,hqhq/libcontainer,haijunTan/runc,balajibr/runc,HuKeping/runc,balajibr/runc,rsampaio/runc,docker/libcontainer,coolljt0725/runc,laijs/runc,keloyang/runc,dieface/runc,mrunalp/runc,coolljt0725/runc,kolyshkin/runc,booyaa/runc,abduld/runc,hxfeng/runc,sallyom/runc,crosbymichael/runc,runcom/runc,w4ngyi/libcontainer,whosthatknocking/runc,InformatiQ/runc,LK4D4/runc,ycaihua/libcontainer,boucher/runc,intfrr/runc,HardikDR/runc,Microsoft/libcontainer,runcom/libcontainer,rhatdan/runc,gitido/runc,stefanberger/runc,Mashimiao/libcontainer,haijunTan/runc,meihuabo/runc,opencontainers/runc,hqhq/libcontainer,navidshaikh/runc,HardikDR/runc,maxamillion/runc,markllama/runc,sallyom/runc,lizf-os/runc,maxamillion/runc,shishir-a412ed/runc,ekuric/runc,stefanberger/runc,kolyshkin/runc,estesp/libcontainer,YujiOshima/runc,jhowardmsft/runc,boucher/libcontainer,marcosnils/runc,carlye566/runc,keloyang/libcontainer,xiaochenshen/runc,wcwxyz/runc,ChengTiesheng/runc,chenchun/runc,shenxiaochen/libcontainer,crosbymichael/libcontainer,nkwilson/runc,chenchun/runc,crosbymichael/libcontainer,InformatiQ/runc,mheon/libcontainer,mapk0y/runc,intfrr/runc,ZJU-SEL/libcontainer,jhowardmsft/runc,mYmNeo/runc,docker/runc,jwuwork/runc,markllama/runc,keloyang/runc,LTD-Beget/libcontainer,mapk0y/runc,jhjeong-kr/runc,wangkirin/runc,rootfs/runc,talwai/runc,Microsoft/libcontainer,ycaihua/libcontainer,subuser-security/runc,talwai/runc,shishir-a412ed/runc,rootfs/runc,zenlinTechnofreak/runc,dqminh/runc,haijunTan/runc,justincormack/runc,runcom/runc,vbatts/runc,keloyang/libcontainer,ZJU-SEL/libcontainer,hqhq/runc,whosthatknocking/runc,avagin/runc,w4ngyi/libcontainer,liuwharton/runc,markllama/runc,runcom/runc,zhangyancoder/libcontainer,wking/runc,adrianreber/runc,BrickXu/libcontainer,rajasec/runc,calavera/runc,shishir-a412ed/runc,YujiOshima/runc,HuKeping/runc,thaJeztah/libcontainer,crosbymichael/runc,tangkun75/libcontainer,ddnbgroup/runc,HuKeping/runc,mheon/runc,keloyang/libcontainer,hxfeng/runc,willmtemple/runc,WeiZhang555/runc,rsampaio/runc,mikebrow/runc,sunyuan3/runc,ddnbgroup/runc,dqminh/runc,wking/runc,keloyang/runc,axsh/runc,kolyshkin/runc,whuwxl/libcontainer,ekuric/runc,cxxly/runc,zenlinTechnofreak/runc,runcom/libcontainer,navidshaikh/runc,boucher/libcontainer,zhangyancoder/libcontainer,lizf-os/runc,cxxly/runc,ddnbgroup/runc,rhatdan/runc,estesp/runc,ZJU-SEL/libcontainer,wcwxyz/runc,docker/runc,sallyom/runc,xiaochenshen/runc