apple: Redefine some additional clashing Mach types

While they usually are not included in a normal strongSwan build, the XPC
header indirectly defines these Mach types. To build charon-xpc, which uses
both XPC and strongSwan includes, we have to redefine these types.

src/libstrongswan/networking/host.h

@@ -24,6 +24,9 @@
 #ifndef HOST_H_
 #define HOST_H_
 
+#include <utils/utils.h>
+#include <utils/chunk.h>
+
 typedef enum host_diff_t host_diff_t;
 typedef struct host_t host_t;
 
@@ -31,9 +34,6 @@ typedef struct host_t host_t;
 #include <stdio.h>
 #include <sys/types.h>
 
-#include <utils/utils.h>
-#include <utils/chunk.h>
-
 /**
  * Representates a Host
  *