Fix memory trashing bug.

This occurred because a global with structure type was declared without the structure definition in scope. ORCA/C allows this, and just treats the struct variable as having size 0. As a result, it effectively shares the storage of whatever comes after it in the OMF file, leading to memory trashing.

atipmapping.c

@@ -1,3 +1,5 @@
 #pragma noroot
 
+#include "atipmapping.h"
+
 struct ATIPMapping atipMapping;

atipmapping.h

@@ -1,6 +1,8 @@
 #ifndef ATIPMAPPING_H
 #define ATIPMAPPING_H
 
+#include <types.h>
+
 typedef struct ATIPMapping {
     /* AppleTalk address/socket */
     Word networkNumber; /* in network byte order */