perf newt: Properly restore the screen when error exiting

Show an OK message box with the last message sent via pr_err,
etc.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1269274229-20442-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 47b12a3..4b9aab7 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -77,10 +77,10 @@
 {
 	setup_pager();
 }
-static inline void exit_browser(void) {}
+static inline void exit_browser(bool wait_for_ok __used) {}
 #else
 void setup_browser(void);
-void exit_browser(void);
+void exit_browser(bool wait_for_ok);
 #endif
 
 extern const char *editor_program;