pb: Init fsize to make compiler happy
pb: Init fsize to make compiler happy

protobuf.c: In function ‘pb_show_msg’:
protobuf.c:384:68: error: ‘fsize’ may be used uninitialized in this function [-Werror=uninitialized]
protobuf.c:247:9: note: ‘fsize’ was declared here

The warning about 'may be uninitialized' is false -- the BUG() is a never-returning function.

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

wtf42/criu,wtf42/criu,ldu4/criu,gonkulator/criu,efiop/criu,wtf42/criu,marcosnils/criu,gonkulator/criu,tych0/criu,fbocharov/criu,KKoukiou/criu-remote,tych0/criu,efiop/criu,svloyso/criu,AuthenticEshkinKot/criu,gablg1/criu,gablg1/criu,rentzsch/criu,svloyso/criu,KKoukiou/criu-remote,KKoukiou/criu-remote,svloyso/criu,sdgdsffdsfff/criu,fbocharov/criu,biddyweb/criu,gonkulator/criu,sdgdsffdsfff/criu,AuthenticEshkinKot/criu,svloyso/criu,rentzsch/criu,efiop/criu,LK4D4/criu,marcosnils/criu,KKoukiou/criu-remote,biddyweb/criu,wtf42/criu,gablg1/criu,gonkulator/criu,kawamuray/criu,kawamuray/criu,AuthenticEshkinKot/criu,LK4D4/criu,fbocharov/criu,kawamuray/criu,rentzsch/criu,KKoukiou/criu-remote,fbocharov/criu,tych0/criu,LK4D4/criu,ldu4/criu,LK4D4/criu,LK4D4/criu,gablg1/criu,KKoukiou/criu-remote,marcosnils/criu,sdgdsffdsfff/criu,wtf42/criu,biddyweb/criu,eabatalov/criu,biddyweb/criu,ldu4/criu,eabatalov/criu,fbocharov/criu,sdgdsffdsfff/criu,biddyweb/criu,rentzsch/criu,ldu4/criu,fbocharov/criu,kawamuray/criu,svloyso/criu,biddyweb/criu,eabatalov/criu,LK4D4/criu,rentzsch/criu,ldu4/criu,efiop/criu,gablg1/criu,eabatalov/criu,sdgdsffdsfff/criu,efiop/criu,sdgdsffdsfff/criu,gablg1/criu,marcosnils/criu,tych0/criu,eabatalov/criu,kawamuray/criu,wtf42/criu,marcosnils/criu,efiop/criu,AuthenticEshkinKot/criu,gonkulator/criu,rentzsch/criu,tych0/criu,ldu4/criu,eabatalov/criu,kawamuray/criu,svloyso/criu,AuthenticEshkinKot/criu,AuthenticEshkinKot/criu,gonkulator/criu,tych0/criu,marcosnils/criu