perf tools: Eliminate some more die() uses in library functions

This time in perf_header__adds_write, propagating the do_write
error returns.

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: <1258649757-17554-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index dc8fedb066ab..d1dbe2b79c42 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -59,7 +59,7 @@ struct perf_header *perf_header__new(void);
 void perf_header__delete(struct perf_header *self);
 
 int perf_header__read(struct perf_header *self, int fd);
-void perf_header__write(struct perf_header *self, int fd, bool at_exit);
+int perf_header__write(struct perf_header *self, int fd, bool at_exit);
 
 int perf_header__add_attr(struct perf_header *self,
                           struct perf_header_attr *attr);