bugfix: fixed a -Wsign-compare compiler warning.

Signed-off-by: Yichun Zhang (agentzh) <agentzh@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/lua_cjson.c b/lua_cjson.c
index cd17d7a..d04f151 100644
--- a/lua_cjson.c
+++ b/lua_cjson.c
@@ -490,7 +490,7 @@ static void json_encode_exception(lua_State *l, json_config_t *cfg, strbuf_t *js
 static void json_append_string(lua_State *l, strbuf_t *json, int lindex)
 {
     const char *escstr;
-    int i;
+    unsigned i;
     const char *str;
     size_t len;