More ticket #972: fixed compilation error on Linux due to the last introduction ot PJ_TCP_NODELAY. Everyone needs to re-run configure though (thanks Dan Arrhenius for the report)

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2962 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/aconfigure.ac b/aconfigure.ac
index 2d56e6a..ec4ae54 100644
--- a/aconfigure.ac
+++ b/aconfigure.ac
@@ -150,6 +150,7 @@
           	  #	include <netinet/in_systm.h>
           	  #endif
           	 ])
+AC_CHECK_HEADER(netinet/tcp.h,[AC_DEFINE(PJ_HAS_NETINET_TCP_H,1)])
 AC_CHECK_HEADER(ifaddrs.h,[AC_DEFINE(PJ_HAS_IFADDRS_H,1)])
 AC_CHECK_HEADER(semaphore.h,[AC_DEFINE(PJ_HAS_SEMAPHORE_H,1)])
 AC_CHECK_HEADER(setjmp.h,[AC_DEFINE(PJ_HAS_SETJMP_H,1)])