[PATCH] wpa_supplicant: Free config only if it was allocated in same call

[dimitrysh at google.com]

 From 15cce845a258b4c8040f6854f664761654a9f1cb Mon Sep 17 00:00:00 2001
From: Dmitry Shmidt <dimitrysh at google.com>
Date: Wed, 31 Jan 2018 16:27:46 -0800
Subject: [PATCH] wpa_supplicant: Free config only if it was allocated in  
same
  call
To: hostap at lists.infradead.org

If option -I:config points to non-existing file, there
is no need to free the previousely allocated config.

Signed-off-by: Dmitry Shmidt <dimitrysh at google.com>
---
  wpa_supplicant/config_file.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wpa_supplicant/config_file.c b/wpa_supplicant/config_file.c
index 6f2161ea6..bf0ba173c 100644
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -397,7 +397,8 @@ struct wpa_config * wpa_config_read(const char *name,  
struct wpa_config *cfgp)
  	if (f == NULL) {
  		wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
  			   "error: %s", name, strerror(errno));
-		os_free(config);
+		if (config != cfgp)
+			os_free(config);
  		return NULL;
  	}

-- 
2.16.0.rc1.238.g530d649a79-goog