A trivial memory leak fix while calling system_path

Signed-off-by: Liang Xie <redacted>
---
 tools/perf/util/exec_cmd.c |    6 ++++--
 tools/perf/util/help.c     |    1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/exec_cmd.c b/tools/perf/util/exec_cmd.c
index 7adf4ad..790cc95 100644
--- a/tools/perf/util/exec_cmd.c
+++ b/tools/perf/util/exec_cmd.c

@@ -83,8 +83,8 @@ void setup_path(void)
 {
 	const char *old_path = getenv("PATH");
 	struct strbuf new_path = STRBUF_INIT;
-
-	add_path(&new_path, perf_exec_path());
+	const char *exec_path = perf_exec_path();
+	add_path(&new_path, exec_path);
 	add_path(&new_path, argv0_path);

 	if (old_path)

@@ -95,6 +95,8 @@ void setup_path(void)
 	setenv("PATH", new_path.buf, 1);

 	strbuf_release(&new_path);
+	if (exec_path)