LPCM: buffer overflow (encoder)

modules/codec/lpcm.c

@@ -464,10 +464,8 @@ static int OpenEncoder( vlc_object_t *p_this )
 
     /* In DVD LCPM, a frame is always 150 PTS ticks. */
     p_sys->i_frame_samples = p_enc->fmt_in.audio.i_rate * 150 / 90000;
-    p_sys->p_buffer = (uint8_t *)malloc(
-        p_sys->i_frame_samples *
-        p_enc->fmt_in.audio.i_channels *
-        p_enc->fmt_in.audio.i_bitspersample);
+    p_sys->p_buffer = xmalloc(p_sys->i_frame_samples
+                            * p_enc->fmt_in.audio.i_channels * 16);
     p_sys->i_buffer_used = 0;
     p_sys->i_frame_num = 0;