1 files changed, 7 insertions, 5 deletions
diff --git a/core/src/xmake/libc/strndup.c b/core/src/xmake/libc/strndup.c
index f61cebb2c..138a4907f 100644
--- a/core/src/xmake/libc/strndup.c
+++ b/core/src/xmake/libc/strndup.c
@@ -38,16 +38,18 @@ tb_int_t xm_libc_strndup(lua_State *lua) {
 
     // do strndup
     tb_char_t const *s = tb_null;
-    if (lua_isnumber(lua, 1))
+    if (lua_isnumber(lua, 1)) {
         s = (tb_char_t const *)(tb_size_t)lua_tointeger(lua, 1);
-    else if (lua_isstring(lua, 2))
+    } else if (lua_isstring(lua, 2)) {
         s = lua_tostring(lua, 2);
-    else
+    } else {
         xm_libc_return_error(lua, "libc.strndup(invalid args)!");
+    }
     tb_int_t n = (tb_int_t)lua_tointeger(lua, 2);
-    if (s && n >= 0)
+    if (s && n >= 0) {
         lua_pushlstring(lua, s, n);
-    else
+    } else {
         lua_pushliteral(lua, "");
+    }
     return 1;
 }