[PATCH] git-compat-util.h: GCC deprecated only takes a message in GCC 4.5+

["Aleajndro R Sedeño" <asedeno@xxxxxxxxxx>]

From: Alejandro R. Sedeño <asedeno@xxxxxxx>

Signed-off-by: Alejandro R. Sedeño <asedeno@xxxxxxx>
Signed-off-by: Alejandro R Sedeño <asedeno@xxxxxxxxxx>
---
 git-compat-util.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/git-compat-util.h b/git-compat-util.h
index b90b64718e..045b47f83a 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -189,9 +189,12 @@ struct strbuf;
 #define _NETBSD_SOURCE 1
 #define _SGI_SOURCE 1
 
-#if defined(__GNUC__)
+#if GIT_GNUC_PREREQ(4, 5)
 #define UNUSED __attribute__((unused)) \
 	__attribute__((deprecated ("parameter declared as UNUSED")))
+#elif defined(__GNUC__)
+#define UNUSED __attribute__((unused)) \
+	__attribute__((deprecated))
 #else
 #define UNUSED
 #endif
-- 
2.38.0.rc1.362.ged0d419d3c-goog