Fix Winsock errno code overlap
Some Winsock errno:s conflict with the standard ones. Try to
restrict the redefines to things relevant for sockets.
diff --git a/common/rdr/FdInStream.cxx b/common/rdr/FdInStream.cxx
index 22433a1..9f35c9f 100644
--- a/common/rdr/FdInStream.cxx
+++ b/common/rdr/FdInStream.cxx
@@ -22,6 +22,7 @@
#include <stdio.h>
#include <string.h>
+#include <errno.h>
#ifdef _WIN32
#include <winsock2.h>
#ifndef _WIN32_WCE
@@ -34,7 +35,6 @@
#include <os/winerrno.h>
#else
#include <sys/types.h>
-#include <errno.h>
#include <unistd.h>
#include <sys/time.h>
#endif