lib: fix openSSL symbol clash on win32 (alanxz#583)

Fix a compile error on win32 where OpenSSL and Win32 X509_* errors collide

Author: vs49688

librabbitmq/amqp_openssl_hostname_validation.c

@@ -27,6 +27,10 @@
  * https://wiki.openssl.org/index.php/Hostname_validation
  */
 
+#if defined(_WIN32)
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include <openssl/ssl.h>
 #include <openssl/x509v3.h>
 

librabbitmq/amqp_openssl_hostname_validation.h

@@ -30,7 +30,7 @@
  * https://wiki.openssl.org/index.php/Hostname_validation
  */
 
-#include <openssl/x509v3.h>
+#include <openssl/ossl_typ.h>
 
 typedef enum {
  AMQP_HVR_MATCH_FOUND,