Check for SO_NOSIGPIPE availability instead of OS name

* src/stream_engine.cpp (stream_engine_t::stream_engine_t):
Use
    #ifdef SO_NOSIGPIPE
instead of
    #if defined XS_HAVE_OSX || defined XS_HAVE_FREEBSD

1 files changed, 1 insertions, 1 deletions

diff --git a/src/stream_engine.cpp b/src/stream_engine.cpp
index a4df7f3..15b566b 100644
--- a/src/stream_engine.cpp
+++ b/src/stream_engine.cpp
@@ -78,7 +78,7 @@ xs::stream_engine_t::stream_engine_t (fd_t fd_, const options_t &options_) :
 #endif
     }
 
-#if defined XS_HAVE_OSX || defined XS_HAVE_FREEBSD
+#ifdef SO_NOSIGPIPE
     //  Make sure that SIGPIPE signal is not generated when writing to a
     //  connection that was already closed by the peer.
     int set = 1;