contrib/credential: fix compilation of wincred helper with MSVC

The git-credential-wincred helper does not compile on Windows with
Microsoft Visual Studio because of our use of `__attribute__()`, which
its compiler doesn't support. While the rest of our codebase would know
to handle this because we redefine the macro in "compat/msvc.h", this
stub isn't available here because we don't include "git-compat-util.h"
in the first place.

Fix the issue by making the attribute depend on the `_MSC_VER`
preprocessor macro.

Signed-off-by: M Hickford <mirth.hickford@gmail.com>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/credential/wincred/git-credential-wincred.c b/contrib/credential/wincred/git-credential-wincred.c
index 4be0d58cd89ad7bfbbf8c8fc0b2268cee9052f9e..04145b511839a534a716acc117a988a357d9f2d6 100644 (file)
--- a/contrib/credential/wincred/git-credential-wincred.c
+++ b/contrib/credential/wincred/git-credential-wincred.c
@@ -12,7 +12,9 @@
 
 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
 
+#ifndef _MSC_VER
 __attribute__((format (printf, 1, 2)))
+#endif
 static void die(const char *err, ...)
 {
        char msg[4096];