Return 1 on success in OPENSSL_init_ssl compatibility implementation.

Summary: Exposed by D15610738.

Reviewed By: ngoyal

Differential Revision: D15622920

fbshipit-source-id: f3058c69098ae740d43f27e8161e99b3c5a6b995

folly/portability/OpenSSL.cpp

@@ -469,7 +469,7 @@ int OPENSSL_init_ssl(uint64_t, const OPENSSL_INIT_SETTINGS*) {
   // The caller should have used SSLContext::setLockTypes() prior to calling
   // this function.
   folly::ssl::detail::installThreadingLocks();
-  return 0;
+  return 1;
 }
 
 void OPENSSL_cleanup() {