Only use unsetenv() when it is available
authorAlexander Barton <alex@barton.de>
Sun, 10 Nov 2013 16:08:41 +0000 (17:08 +0100)
committerAlexander Barton <alex@barton.de>
Sun, 10 Nov 2013 16:08:51 +0000 (17:08 +0100)
commitae00c100acdb4d2d3f99524d30258d07eefcfb6d
treee08f7580d60d44959c79821702d635404fbe445d
parent61d1c864c55291c1f5f81f284e984b044fe2722f
Only use unsetenv() when it is available

AIX 4.3 dosn't support it, for example.
configure.ng
src/ngircd/conn.c