[yggtorrent] fix new style torrent size parsing

Status Job ID Name Coverage
  Build
failed #10628
build:2.7

failed #10629
build:3

 
  Test
skipped #10631
allowed to fail
lint:2.7
skipped #10634
allowed to fail
lint:3
skipped #10630
pyflakes:2.7
skipped #10633
pyflakes:3
skipped #10632
unittests:2.7
skipped #10635
unittests:3
 
  Deploy
skipped #10636
doc:2.7
skipped #10637
doc:3
 
Name Stage Failure
failed
build:2.7 Build There is an unknown failure, please try again
No job trace
failed
build:3 Build There is an unknown failure, please try again
No job trace