[PATCH 2/3] mingw.h: Define only if necessary

[Sven Strickroth <sven@cs-ware.de>]

Since the latest version of MSVC EWOULDBLOCK, EAFNOSUPPORT and
ECONNABORTED are defined in errno.h. When used with MSVC mingw.h
is included from msvc.h and causes warnings about redefinitions.

Signed-off-by: Sven Strickroth <email@cs-ware.de>
---
 compat/mingw.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/compat/mingw.h b/compat/mingw.h
index 685cd2c..c424333 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -32,7 +32,9 @@ typedef int socklen_t;
 #define WEXITSTATUS(x) ((x) & 0xff)
 #define WTERMSIG(x) SIGTERM
 
+#ifndef EWOULDBLOCK
 #define EWOULDBLOCK EAGAIN
+#endif
 #define SHUT_WR SD_SEND
 
 #define SIGHUP 1
@@ -46,8 +48,12 @@ typedef int socklen_t;
 #define F_SETFD 2
 #define FD_CLOEXEC 0x1
 
+#ifndef EAFNOSUPPORT
 #define EAFNOSUPPORT WSAEAFNOSUPPORT
+#endif
+#ifndef ECONNABORTED
 #define ECONNABORTED WSAECONNABORTED
+#endif
 
 struct passwd {
 	char *pw_name;
-- 
Best regards,
 Sven Strickroth
 PGP key id F5A9D4C4 @ any key-server