trace-cmd: Minor cleanup in print_stat()

Do an early out in print_stat() when `quiet` is set instead of rechecking it on
each loop iteration.

No changes in behavior intended.

Link: http://lore.kernel.org/linux-trace-devel/20190222180539.27439-3-kaslevs@vmware.com

Signed-off-by: Slavomir Kaslev <kaslevs@vmware.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
1 file changed