[FFmpeg-cvslog] configure: fix --disable-alsa can't work

[Jun Zhao]

ffmpeg | branch: master | Jun Zhao <barryjzhao at tencent.com> | Wed Sep  4 17:27:09 2019 +0800| [da6e569916628c38e7ddd2609e53bd619b3602cf] | committer: Jun Zhao

configure: fix --disable-alsa can't work

fix --disable-alsa can't work in configure

Signed-off-by: Jun Zhao <barryjzhao at tencent.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=da6e569916628c38e7ddd2609e53bd619b3602cf
---

 configure | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index b5bff39438..3ef8f4ea47 100755
--- a/configure
+++ b/configure
@@ -6486,8 +6486,8 @@ else
 EOF
 fi
 
-enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
-    check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
+enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
+                  check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
 
 enabled libjack &&
     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range