build: Fix typo in comment to HAVE_IP_MREQN.

Introduced in 2009 when the --udp_mcast_iface option was implemented
and the check for struct ip_mreqn was added.

diff --git a/configure.ac b/configure.ac
index ee1c3d82697e023185803af65b2dc7604c047002..aec063ff40627234dc8b0368cc8a7fb4e512cd41 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -197,7 +197,7 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 ]])],[have_ip_mreqn=yes],[have_ip_mreqn=no])
 AC_MSG_RESULT($have_ip_mreqn)
 if test ${have_ip_mreqn} = yes; then
 ]])],[have_ip_mreqn=yes],[have_ip_mreqn=no])
 AC_MSG_RESULT($have_ip_mreqn)
 if test ${have_ip_mreqn} = yes; then

-       AC_DEFINE(HAVE_IP_MREQN, 1, define to 1 you have struct ip_mreqn)
+       AC_DEFINE(HAVE_IP_MREQN, 1, define to 1 if you have struct ip_mreqn)

 fi
 ########################################################################### ogg
 STASH_FLAGS
 fi
 ########################################################################### ogg
 STASH_FLAGS