Fix detection of ipv6 on Solaris

The configuration script detects whether linking with -lsocket is
necessary but doesn't add -lsocket to LIBS.  This lets the ipv6 test
fail.

Signed-off-by: Dennis Stosberg <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: dstosberg

configure.ac

@@ -154,6 +154,7 @@ AC_CHECK_LIB([c], [socket],
 [NEEDS_SOCKET=],
 [NEEDS_SOCKET=YesPlease])
 AC_SUBST(NEEDS_SOCKET)
+test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
 
 
 ## Checks for header files.