free null cleanup finale

Don't check for NULL before calling OPENSSL_free

Reviewed-by: Richard Levitte <levitte@openssl.org>
diff --git a/ssl/t1_ext.c b/ssl/t1_ext.c
index ce54f4f..193cae8 100644
--- a/ssl/t1_ext.c
+++ b/ssl/t1_ext.c
@@ -195,8 +195,7 @@
 
 void custom_exts_free(custom_ext_methods *exts)
 {
-    if (exts->meths)
-        OPENSSL_free(exts->meths);
+    OPENSSL_free(exts->meths);
 }
 
 /* Set callbacks for a custom extension. */