MFC r294126:

MFC r294126:

Fix warnings with gcc 5.0

reconnect.c:
- Convert the K&R prototype of main to an ANSI prototype to mute a
  warning from gcc 4.2.1
- Close s_sock2 after finishing off the last test to plug a leak and
  mute a warning from gcc 5.0 about a -Wunused-but-set variable

sendfile.c:
- Fix a -Wunused-but-set warning with gcc 5.0 with pagesize in main(..)

git-svn-id: svn://svn.freebsd.org/base/stable/10@294486 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f