Fix OPENSSL_NO_ENGINE guard placement

Author: olszomal

src/eng_front.c

@@ -21,12 +21,13 @@
 #include <openssl/crypto.h>
 #include <openssl/objects.h>
 #include <openssl/engine.h>
+
+#ifndef OPENSSL_NO_ENGINE
+
 #ifndef ENGINE_CMD_BASE
 #error did not get engine.h
 #endif
 
-#ifndef OPENSSL_NO_ENGINE
-
 #define PKCS11_ENGINE_ID "pkcs11"
 #define PKCS11_ENGINE_NAME "pkcs11 engine"