util/mem: Move memdup to new util/mem.c file

This seems handy and I want to use this in wlr_color_representation.

include/util/mem.h

@@ -0,0 +1,14 @@
+#ifndef UTIL_MEM_H
+#define UTIL_MEM_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+/**
+ * Allocate a new block of memory and copy *src to it, then store the address
+ * of the new allocation in *out.  Returns true if it worked, or false if
+ * allocation failed.
+ */
+bool memdup(void *out, const void *src, size_t size);
+
+#endif // UTIL_MEM_H

types/wlr_color_management_v1.c

@@ -1,12 +1,14 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
+
 #include <wlr/types/wlr_color_management_v1.h>
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_output.h>
 #include <wlr/util/addon.h>
 
 #include "render/color.h"
+#include "util/mem.h"
 
 #define COLOR_MANAGEMENT_V1_VERSION 1
 
@@ -898,17 +900,6 @@ static void manager_handle_display_destroy(struct wl_listener *listener, void *d
 	free(manager);
 }
 
-static bool memdup(void *out, const void *src, size_t size) {
-	void *dst = malloc(size);
-	if (dst == NULL) {
-		return false;
-	}
-	memcpy(dst, src, size);
-	void **dst_ptr = out;
-	*dst_ptr = dst;
-	return true;
-}
-
 struct wlr_color_manager_v1 *wlr_color_manager_v1_create(struct wl_display *display,
 		uint32_t version, const struct wlr_color_manager_v1_options *options) {
 	assert(version <= COLOR_MANAGEMENT_V1_VERSION);

util/mem.c

@@ -0,0 +1,16 @@
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "util/mem.h"
+
+bool memdup(void *out, const void *src, size_t size) {
+	void *dst = malloc(size);
+	if (dst == NULL) {
+		return false;
+	}
+	memcpy(dst, src, size);
+	void **dst_ptr = out;
+	*dst_ptr = dst;
+	return true;
+}

util/meson.build

@@ -6,6 +6,7 @@ wlr_files += files(
 	'global.c',
 	'log.c',
 	'matrix.c',
+	'mem.c',
 	'rect_union.c',
 	'region.c',
 	'set.c',