• Explicitly initialize ch to 0
• Delete some spurious whitespace
• Use calloc instead of malloc in the last test to ensure that sendspace is properly zero'ed out

Differential Revision: https://reviews.freebsd.org/D689 (part of a larger diff)
MFC after: 1 week
Reviewed by: asomers, ngie
Submitted by: markj
Sponsored by: EMC / Isilon Storage Division