[sheepdog] [PATCH] trace: call tracer->exit only when the paird trace->enter was called

[Liu Yuan]

On Fri, Aug 30, 2013 at 11:06:05PM +0900, MORITA Kazutaka wrote:
> From: MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp>
> 
> This fixes the result of graph tracer when we use other tracers
> (thread_checker and/or loop_checker) at the same time.
> 

Applied thanks

Yuan