Update code format

src/ngx_http_lua_socket_udp.c

@@ -965,8 +965,9 @@ ngx_http_lua_socket_udp_send(lua_State *L)
 }
 
 
-
 #define stack_diff 1
+
+
 static int
 ngx_http_lua_socket_udp_buff_send(lua_State *L)
 {
@@ -1033,14 +1034,17 @@ ngx_http_lua_socket_udp_buff_send(lua_State *L)
     size_t start = luaL_checklong(L, -2);
     size_t end = luaL_checklong(L, -1);
     buff_str = luaL_checklstring(L, -3, &buf_len);
+
     if (start < 1 || end > buf_len || start > end || start > buf_len)
     {
         lua_pushnil(L);
         lua_pushliteral(L, "start or end index invalid");
         return 2;
     }
+
     size = (end - start + 1);
     buf_len = size;
+
     if (stack_size > 3 + stack_diff)
     {
         for (int i = (-1 * stack_size) + stack_diff; i <= -4; i++)
@@ -1049,21 +1053,24 @@ ngx_http_lua_socket_udp_buff_send(lua_State *L)
             size += head_len;
         }
     }
+
     // copy msg
     query.data = lua_newuserdata(L, size);
     query.len = size;
     msg_tmp = query.data;
     lua_pop(L, 1);
+
     if (stack_size > 3 + stack_diff)
     {
         for (int i = (-1 * stack_size) + stack_diff; i <= -4; i++)
         {
             header_str = lua_tolstring(L, i, &head_len);
-            msg_tmp = ngx_cpymem(msg_tmp, (u_char *)header_str, head_len);
+            msg_tmp = ngx_cpymem(msg_tmp, (u_char *) header_str, head_len);
         }
     }
+
     buff_str = buff_str + start - 1;
-    ngx_memcpy(msg_tmp, (u_char *)buff_str, buf_len);
+    ngx_memcpy(msg_tmp, (u_char *) buff_str, buf_len);
 
     u->ft_type = 0;
 
@@ -1098,6 +1105,7 @@ ngx_http_lua_socket_udp_buff_send(lua_State *L)
     return 1;
 }
 
+
 static int
 ngx_http_lua_socket_udp_receive(lua_State *L)
 {