Adding check for mkstemp return error value in dso-data test.

Reported-by: Arnaldo Carvalho de Melo <a...@redhat.com>
Signed-off-by: Jiri Olsa <jo...@redhat.com>
Cc: Corey Ashford <cjash...@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Link: http://lkml.kernel.org/r/1352508412-16914-13-git-send-email-jo...@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/tests/dso-data.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/tests/dso-data.c b/tools/perf/tests/dso-data.c
index b5198f5..5eaffa2 100644
--- a/tools/perf/tests/dso-data.c
+++ b/tools/perf/tests/dso-data.c
@@ -26,6 +26,10 @@ static char *test_file(int size)
        unsigned char *buf;

        fd = mkstemp(templ);
+       if (fd < 0) {
+               perror("mkstemp failed");
+               return NULL;
+       }

        buf = malloc(size);
        if (!buf) {
--
1.7.9.2.358.g22243

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