[gmime] Silence compiler warnings about redefinitions of G_GNUC_* macros

[Rico Tzschichholz <ricotz src gnome org>]

commit 973602a1b7d666ffb5ddcf152239ef8c2e774ca2
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Mon Nov 11 10:06:16 2019 -0500

    Silence compiler warnings about redefinitions of G_GNUC_* macros

 gmime/gmime-utils.c      | 5 +++--
 gmime/internet-address.c | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/gmime/gmime-utils.c b/gmime/gmime-utils.c
index f48e7882..a6d77e1e 100644
--- a/gmime/gmime-utils.c
+++ b/gmime/gmime-utils.c
@@ -25,8 +25,6 @@
 
 #define _GNU_SOURCE
 
-#include <glib.h>
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -52,8 +50,11 @@
 
 #ifdef LIBIDN
 #include <idn2.h>
+#undef G_GNUC_UNUSED
+#undef G_GNUC_DEPRECATED
 #endif
 
+#include <glib.h>
 #include "gmime-utils.h"
 #include "gmime-common.h"
 #include "gmime-internal.h"
diff --git a/gmime/internet-address.c b/gmime/internet-address.c
index 7edc6807..f9bc6b55 100644
--- a/gmime/internet-address.c
+++ b/gmime/internet-address.c
@@ -31,6 +31,8 @@
 
 #ifdef LIBIDN
 #include <idn2.h>
+#undef G_GNUC_UNUSED
+#undef G_GNUC_DEPRECATED
 #endif
 
 #include "internet-address.h"