GH773: Possible leak on CRYPTO_THREAD_lock_new failure

Signed-off-by: NRich Salz <rsalz@akamai.com>
Reviewed-by: NMatt Caswell <matt@openssl.org>

crypto/threads_pthread.c

@@ -58,8 +58,10 @@ CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
     if (lock == NULL)
         return NULL;
 
-    if (pthread_rwlock_init(lock, NULL) != 0)
+    if (pthread_rwlock_init(lock, NULL) != 0) {
+        OPENSSL_free(lock);
         return NULL;
+    }
 
     return lock;
 }

crypto/threads_win.c

@@ -59,8 +59,10 @@ CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
         return NULL;
 
     /* 0x400 is the spin count value suggested in the documentation */
-    if (!InitializeCriticalSectionAndSpinCount(lock, 0x400))
+    if (!InitializeCriticalSectionAndSpinCount(lock, 0x400)) {
+        OPENSSL_free(lock);
         return NULL;
+    }
 
     return lock;
 }