lavfi/vf_hue: replace rint by lrint

avoids float to int cast.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

libavfilter/vf_hue.c

@@ -105,8 +105,8 @@ static inline void compute_sin_and_cos(HueContext *hue)
      * the saturation.
      * This will be useful in the apply_lut function.
      */
-    hue->hue_sin = rint(sin(hue->hue) * (1 << 16) * hue->saturation);
-    hue->hue_cos = rint(cos(hue->hue) * (1 << 16) * hue->saturation);
+    hue->hue_sin = lrint(sin(hue->hue) * (1 << 16) * hue->saturation);
+    hue->hue_cos = lrint(cos(hue->hue) * (1 << 16) * hue->saturation);
 }
 
 static inline void create_luma_lut(HueContext *h)