avformat/mxf: fix NTSC 59.94 samples per frame layout

FFmbc uses this.
bmx uses this.
XAVC MXF Mapping and Operating Points prefers this.
Basic rounding rules also yields these numbers.
Signed-off-by: Marton Balint <cus@passwd.hu>

libavformat/mxf.c

@@ -134,7 +134,7 @@ static const MXFSamplesPerFrame mxf_spf[] = {
     { { 1001, 24000 }, { 2002, 0,    0,    0,    0,    0 } }, // FILM 23.976
     { { 1, 24},        { 2000, 0,    0,    0,    0,    0 } }, // FILM 24
     { { 1001, 30000 }, { 1602, 1601, 1602, 1601, 1602, 0 } }, // NTSC 29.97
-    { { 1001, 60000 }, { 801,  801,  801,  801,  800,  0 } }, // NTSC 59.94
+    { { 1001, 60000 }, { 801,  801,  800,  801,  801,  0 } }, // NTSC 59.94
     { { 1, 25 },       { 1920, 0,    0,    0,    0,    0 } }, // PAL 25
     { { 1, 50 },       { 960,  0,    0,    0,    0,    0 } }, // PAL 50
     { { 1, 60 },       { 800,  0,    0,    0,    0,    0 } },