From: Xie XiuQi <[email protected]>

Need to free "str" before return when asprintf() failed
to avoid memory leak.

Signed-off-by: Xie XiuQi <[email protected]>
---
 tools/perf/util/sort.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index f14cc728c358..8ed777565c82 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -2811,7 +2811,7 @@ static char *prefix_if_not_in(const char *pre, char *str)
                return str;
 
        if (asprintf(&n, "%s,%s", pre, str) < 0)
-               return NULL;
+               n = NULL;
 
        free(str);
        return n;
-- 
2.17.1

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