patch for backend/ricoh2_buffer.c under FreeBSD

Note: I have only submitted the patch that already is in FreeBSD port of sane-backends; this is not my work. From https://svnweb.freebsd.org/ports/head/graphics/sane-backends/files/patch-backend_ricoh2__buffer.c?view=markup&pathrev=526253

--- backend/ricoh2_buffer.c.orig	2020-02-02 11:58:09 UTC
+++ backend/ricoh2_buffer.c
@@ -50,7 +50,7 @@
 #if defined(__APPLE__) && defined(__MACH__)
 #include <malloc/malloc.h>
 #else
-#include <malloc.h>
+#include <stdlib.h>
 #endif
 
 #include "../include/sane/sanei_debug.h"

hope it helps.

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