[PATCH] perf script: fix double free on command_line

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

command_line is free'd twice if db_export__branch_types fails. To
avoid this, defer the free'ing of command_line to after this call
so that the error return path will just free command_line once.

Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 tools/perf/util/scripting-engines/trace-event-python.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c 
b/tools/perf/util/scripting-engines/trace-event-python.c
index d72fafc..e982863 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -1091,8 +1091,6 @@ static int python_start_script(const char *script, int 
argc, const char **argv)
                goto error;
        }
 
-       free(command_line);
-
        set_table_handlers(tables);
 
        if (tables->db_export_mode) {
@@ -1101,6 +1099,8 @@ static int python_start_script(const char *script, int 
argc, const char **argv)
                        goto error;
        }
 
+       free(command_line);
+
        return err;
 error:
        Py_Finalize();
-- 
2.7.0