Only include opensslconf.h once
Fixes a pyca cryptography test failure.
[extended tests]
#include <openssl/opensslv.h>
+#ifndef HEADER_OPENSSLCONF_H
+# define HEADER_OPENSSLCONF_H
+
# ifdef __cplusplus
extern "C" {
# endif
@@ -183,3 +186,4 @@ extern "C" {
# ifdef __cplusplus
}
# endif
+#endif /* HEADER_OPENSSLCONF_H */
