btrfs-progs: autogen: Don't show success message on fail
When autogen.sh failed, the success message is still in output:
# ./autogen.sh
...
configure.ac:131: error: possibly undefined macro: PKG_CHECK_VAR
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
Now type './configure' and 'make' to compile.
#
Fixed by check return value of autoconf.
After patch:
# ./autogen.sh
...
configure.ac:132: error: possibly undefined macro: PKG_CHECK_VAR
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
#
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>