[gtk-vnc] Free coroutine stack when releasing coroutine

[Daniel P. Berrange <dberrange src gnome org>]

commit 49fbd957cb686ff3f9c31923ff17a9529edd9c13
Author: Daniel P. Berrange <berrange redhat com>
Date:   Fri Sep 13 12:06:57 2013 +0100

    Free coroutine stack when releasing coroutine
    
    The coroutine_init function mmap's a stack for the
    ucontext coroutine, but nothing ever munmaps it.
    
    Signed-off-by: Daniel P. Berrange <berrange redhat com>

 src/coroutine_ucontext.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/coroutine_ucontext.c b/src/coroutine_ucontext.c
index 848016e..8fe650e 100644
--- a/src/coroutine_ucontext.c
+++ b/src/coroutine_ucontext.c
@@ -42,6 +42,8 @@ static int _coroutine_release(struct continuation *cc)
             return ret;
     }
 
+    munmap(co->cc.stack, co->cc.stack_size);
+
     co->caller = NULL;
 
     return 0;