Update json_encoder.c

Author: LamentXU123

ext/json/json_encoder.c

@@ -53,19 +53,20 @@ static inline void php_json_pretty_print_char(smart_str *buf, int options, char
 
 static inline void php_json_pretty_print_indent(smart_str *buf, int options, const php_json_encoder *encoder) /* {{{ */
 {
-    if (options & PHP_JSON_PRETTY_PRINT) {
-        int depth = encoder->depth;
-        if (depth <= 8) {
-            int i;
-            for (i = 0; i < depth; i++) {
-                smart_str_appendl(buf, "    ", 4);
-            }
-        } else {
-            size_t remaining = (size_t) depth * 4;
-            char *dst = smart_str_extend(buf, remaining);
-            memset(dst, ' ', remaining);
-        }
-    }
+	if (options & PHP_JSON_PRETTY_PRINT) {
+		static const char spaces[] =
+			"                                                                ";
+		size_t remaining = (size_t) encoder->depth * 4;
+
+		while (remaining >= sizeof(spaces) - 1) {
+			smart_str_appendl(buf, spaces, sizeof(spaces) - 1);
+			remaining -= sizeof(spaces) - 1;
+		}
+
+		if (remaining) {
+			smart_str_appendl(buf, spaces, remaining);
+		}
+	}
 }
 /* }}} */