default_configuration: Macro for the internal_configuration defaults

tests/parse_value.c

@@ -43,7 +43,7 @@ static void assert_is_value(cJSON *value_item, int type)
 
 static void assert_parse_value(const char *string, int type)
 {
-    parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0 } };
+    parse_buffer buffer = { 0, 0, 0, 0, default_configuration };
     buffer.content = (const unsigned char*) string;
     buffer.length = strlen(string) + sizeof("");
     buffer.configuration = global_configuration;