make data unsigned

diff --git a/src/modules/rlm_rest/rlm_rest.c b/src/modules/rlm_rest/rlm_rest.c
index 26ca0bb3114a5e0df9ac21ec0d69bc6c2aa6c6bf..ac001714b6f900af305f8c54ea87aa52bad01e94 100644 (file)
--- a/src/modules/rlm_rest/rlm_rest.c
+++ b/src/modules/rlm_rest/rlm_rest.c
@@ -189,7 +189,7 @@ static ssize_t jsonquote_xlat(UNUSED void *instance, UNUSED REQUEST *request,
                                break;
 
                        default:
-                               len = snprintf(out, freespace, "u%04X", *p);
+                               len = snprintf(out, freespace, "u%04X", (uint32_t) *p);
                                if (is_truncated(len, freespace)) return (outlen - freespace) + len;
                                out += len;
                                freespace -= len;