[gtk: 1/2] OpenBSD: don't include malloc.h

[Emmanuele Bassi <ebassi src gnome org>]

commit b4508be3c91f9d234dc61635d7cbc196f04cc33f
Author: Antoine Jacoutot <ajacoutot gnome org>
Date:   Thu Aug 13 17:48:34 2020 +0200

    OpenBSD: don't include malloc.h
    
    This header doesn't exist anymore on recent OpenBSD releases.

 gtk/roaring/roaring.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/roaring/roaring.h b/gtk/roaring/roaring.h
index 26ab1bd4dc..db04db5ae6 100644
--- a/gtk/roaring/roaring.h
+++ b/gtk/roaring/roaring.h
@@ -58,7 +58,7 @@ enum {
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdlib.h>  // will provide posix_memalign with _POSIX_C_SOURCE as defined above
-#if !(defined(__APPLE__)) && !(defined(__FreeBSD__))
+#if !(defined(__APPLE__)) && !(defined(__FreeBSD__)) && !(defined(__OpenBSD__))
 #include <malloc.h>  // this should never be needed but there are some reports that it is needed.
 #endif