EAFNOSUPPORT defined on Windows platform

Windows headers don't defined this error.
This patch defines it if not already defined.

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/err.cpp b/src/err.cpp
index 31e2974..f374de9 100644
--- a/src/err.cpp
+++ b/src/err.cpp
@@ -228,6 +228,9 @@ void zmq::wsa_error_to_errno ()
     case WSAEADDRNOTAVAIL:
         errno = EADDRNOTAVAIL;
         return;
+    case WSAEAFNOSUPPORT:
+        errno = EAFNOSUPPORT;
+        return;
     default:
         wsa_assert (false);
     }