OPENSSL_free is a macro in 1.1.0
diff --git a/src/_cffi_src/openssl/crypto.py b/src/_cffi_src/openssl/crypto.py
index 9357815..b9ecd5a 100644
--- a/src/_cffi_src/openssl/crypto.py
+++ b/src/_cffi_src/openssl/crypto.py
@@ -43,7 +43,6 @@
void (*CRYPTO_get_locking_callback(void))(int, int, const char *, int);
void CRYPTO_lock(int, int, const char *, int);
-void OPENSSL_free(void *);
"""
MACROS = """
@@ -55,6 +54,9 @@
const char *OpenSSL_version(int);
void CRYPTO_add(int *, int, int);
+
+/* this is a macro in 1.1.0 */
+void OPENSSL_free(void *);
"""
CUSTOMIZATIONS = """