BUG#25163241 - MYSQL SERVER: VARIABLE LENGTH ARRAY IN XCOM CAUSING BUILD ERROR

Post push fix: Reverted commit fad0549, since the temporary fix in it
becomes obsolete.

Author: Filipe Campos

rapid/plugin/group_replication/libmysqlgcs/src/bindings/xcom/xcom/xcom_os_layer.h

@@ -22,7 +22,7 @@ extern "C" {
 
 /* Required for FreeBSD, NetBSD and MacOS */
 #ifndef MAXHOSTNAMELEN
-  #ifdef _SC_HOST_NAME_MAx
+  #ifdef _SC_HOST_NAME_MAX
     #define MAXHOSTNAMELEN sysconf(_SC_HOST_NAME_MAX)
   #else
     #define MAXHOSTNAMELEN 1024