Fix type resolution issue with no_float enabled

src/packages/time_basic.rs

@@ -99,7 +99,7 @@ fn time_diff(ts1: Instant, ts2: Instant) -> Result<Dynamic, Box<EvalAltResult>>
             .into();
         }
 
-        Ok(-(seconds as INT).into())
+        Ok(Dynamic::from(-(seconds as INT)))
     } else {
         let seconds = (ts1 - ts2).as_secs();