shared: add nm_utils_strv_make_deep_copied_n() helper

shared/nm-glib-aux/nm-shared-utils.c

@@ -2288,7 +2288,7 @@ nm_utils_strv_make_deep_copied (const char **strv)
 {
 	gsize i;
 
-	/* it takes a strv dictionary, and copies each
+	/* it takes a strv list, and copies each
 	 * strings. Note that this updates @strv *in-place*
 	 * and returns it. */
 
@@ -2300,6 +2300,23 @@ nm_utils_strv_make_deep_copied (const char **strv)
 	return (char **) strv;
 }
 
+char **
+nm_utils_strv_make_deep_copied_n (const char **strv, gsize len)
+{
+	gsize i;
+
+	/* it takes a strv array with len elements, and copies each
+	 * strings. Note that this updates @strv *in-place*
+	 * and returns it. */
+
+	if (!strv)
+		return NULL;
+	for (i = 0; i < len; i++)
+		strv[i] = g_strdup (strv[i]);
+
+	return (char **) strv;
+}
+
 /*****************************************************************************/
 
 gssize

shared/nm-glib-aux/nm-shared-utils.h

@@ -951,6 +951,8 @@ nm_utils_strdict_get_keys (const GHashTable *hash,
 
 char **nm_utils_strv_make_deep_copied (const char **strv);
 
+char **nm_utils_strv_make_deep_copied_n (const char **strv, gsize len);
+
 static inline char **
 nm_utils_strv_make_deep_copied_nonnull (const char **strv)
 {