Fix a memory leak (there's another around here somewhere, though).

PR:

diff --git a/crypto/engine/engine_list.c b/crypto/engine/engine_list.c
index b41e6e53544047b2a3cc94fd6a919d6dfad38f40..0f1ea991c81402b419bb9869850fa104a34a912a 100644 (file)
--- a/crypto/engine/engine_list.c
+++ b/crypto/engine/engine_list.c
@@ -85,6 +85,7 @@ static ENGINE *engine_list_tail = NULL;
  * is needed because the engine list may genuinely become empty during
  * use (so we can't use engine_list_head as an indicator for example. */
 static int engine_list_flag = 0;
+static int ENGINE_free_nolock(ENGINE *e);
 
 /* These static functions starting with a lower case "engine_" always
  * take place when CRYPTO_LOCK_ENGINE has been locked up. */
@@ -176,9 +177,7 @@ static int engine_list_remove(ENGINE *e)
                engine_list_head = e->next;
        if(engine_list_tail == e)
                engine_list_tail = e->prev;
-       /* remove our structural reference. */
-       e->struct_ref--;
-       engine_ref_debug(e, 0, -1)
+       ENGINE_free_nolock(e);
        return 1;
        }
 
@@ -200,13 +199,7 @@ static int engine_internal_check(void)
                toret = 0;
        else
                engine_list_flag = 1;
-#if 0
-       ENGINE_free(def_engine);
-#else
-       /* We can't ENGINE_free() because the lock's already held */
-       def_engine->struct_ref--;
-       engine_ref_debug(def_engine, 0, -1)
-#endif
+       ENGINE_free_nolock(def_engine);
        return 1;
        }
 
@@ -429,6 +422,32 @@ int ENGINE_free(ENGINE *e)
        return 1;
        }
 
+static int ENGINE_free_nolock(ENGINE *e)
+       {
+       int i;
+
+       if(e == NULL)
+               {
+               ENGINEerr(ENGINE_F_ENGINE_FREE,
+                       ERR_R_PASSED_NULL_PARAMETER);
+               return 0;
+               }
+       
+       i=--e->struct_ref;
+       engine_ref_debug(e, 0, -1)
+       if (i > 0) return 1;
+#ifdef REF_CHECK
+       if (i < 0)
+               {
+               fprintf(stderr,"ENGINE_free, bad structural reference count\n");
+               abort();
+               }
+#endif
+       CRYPTO_free_ex_data(engine_ex_data_stack, e, &e->ex_data);
+       OPENSSL_free(e);
+       return 1;
+       }
+
 int ENGINE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
                CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
        {