[FFmpeg-cvslog] avformat/hlsplaylist: simplify code for checking whether the string is empty

[Limin Wang]

ffmpeg | branch: master | Limin Wang <lance.lmwang at gmail.com> | Thu Mar 26 21:56:58 2020 +0800| [73dc87c4f07f82b9756b3bbf4d4e9f18e46ef2e3] | committer: Steven Liu

avformat/hlsplaylist: simplify code for checking whether the string is empty

Signed-off-by: Limin Wang <lance.lmwang at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=73dc87c4f07f82b9756b3bbf4d4e9f18e46ef2e3
---

 libavformat/hlsplaylist.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavformat/hlsplaylist.c b/libavformat/hlsplaylist.c
index 9cbd02353f..56244496c0 100644
--- a/libavformat/hlsplaylist.c
+++ b/libavformat/hlsplaylist.c
@@ -65,11 +65,11 @@ void ff_hls_write_stream_info(AVStream *st, AVIOContext *out,
     if (st && st->codecpar->width > 0 && st->codecpar->height > 0)
         avio_printf(out, ",RESOLUTION=%dx%d", st->codecpar->width,
                 st->codecpar->height);
-    if (codecs && strlen(codecs) > 0)
+    if (codecs && codecs[0])
         avio_printf(out, ",CODECS=\"%s\"", codecs);
-    if (agroup && strlen(agroup) > 0)
+    if (agroup && agroup[0])
         avio_printf(out, ",AUDIO=\"group_%s\"", agroup);
-    if (ccgroup && strlen(ccgroup) > 0)
+    if (ccgroup && ccgroup[0])
         avio_printf(out, ",CLOSED-CAPTIONS=\"%s\"", ccgroup);
     avio_printf(out, "\n%s\n\n", filename);
 }