imxtools: add const and set pointer to NULL on free to avoid double free

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30918 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 2 insertions, 1 deletions

diff --git a/utils/imxtools/misc.c b/utils/imxtools/misc.c
index 8d7cea89d7..7271ca8ab7 100644
--- a/utils/imxtools/misc.c
+++ b/utils/imxtools/misc.c
@@ -30,7 +30,7 @@ bool g_debug = false;
  * Misc
  */
 
-void *memdup(void *p, size_t len)
+void *memdup(const void *p, size_t len)
 {
     void *cpy = xmalloc(len);
     memcpy(cpy, p, len);
@@ -156,6 +156,7 @@ void clear_keys()
 {
     free(g_key_array);
     g_nr_keys = 0;
+    g_key_array = NULL;
 }
 
 void add_keys_from_file(const char *key_file)