libavformat/mxfenc: add {} to complex ifs

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/mxfenc.c

@@ -1700,16 +1700,16 @@ static int mxf_write_header(AVFormatContext *s)
             if (ret < 0)
                 return ret;
             if (s->oformat == &ff_mxf_d10_muxer) {
-                if (st->codec->bit_rate == 50000000)
+                if (st->codec->bit_rate == 50000000) {
                     if (mxf->time_base.den == 25) sc->index = 3;
                     else                          sc->index = 5;
-                else if (st->codec->bit_rate == 40000000)
+                } else if (st->codec->bit_rate == 40000000) {
                     if (mxf->time_base.den == 25) sc->index = 7;
                     else                          sc->index = 9;
-                else if (st->codec->bit_rate == 30000000)
+                } else if (st->codec->bit_rate == 30000000) {
                     if (mxf->time_base.den == 25) sc->index = 11;
                     else                          sc->index = 13;
-                else {
+                } else {
                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
                     return -1;
                 }