fix(lpb_tointegerx): filter out the malformat, such as, #a, #-aaa... (#…

…269)

pb.c

@@ -340,7 +340,7 @@ static uint64_t lpb_tointegerx(lua_State *L, int idx, int *isint) {
     } else {
         for (; *s != '\0'; ++s) {
             int n = lpb_hexchar(*s);
-            if (n < 0 || n > 10) break;
+            if (n < 0 || n > 9) break;
             v = v * 10 + n;
         }
     }