DtMmdb: fix a crash occurs when creating bookmark.

cde/lib/DtMmdb/object/oid_t.C

@@ -91,7 +91,7 @@ oid_t::oid_t(const char* source, Boolean ascii_format, Boolean swap_order)
       memcpy((char*)&v_i_code, source, sizeof(v_i_code));
 
       if ( swap_order == true )
-         ORDER_SWAP_LONG(v_i_code);
+         ORDER_SWAP_I_CODE_T(v_i_code);
 
    } else {
       istringstream in((char*)source);
@@ -248,7 +248,7 @@ void oid_t::to_char_string(char* sink, Boolean swap_order) const
 
    if ( swap_order == true ) {
       i_code_t x = v_i_code;
-      ORDER_SWAP_LONG(x);
+      ORDER_SWAP_I_CODE_T(x);
       memcpy(sink, (char*)&x, sizeof(x));
    } else 
       memcpy(sink, (char*)&v_i_code, sizeof(v_i_code));

cde/lib/DtMmdb/object/oid_t.h

@@ -65,6 +65,7 @@ typedef unsigned short c_code_t;
 typedef mmdb_pos_t i_code_t;
 
 #define OID_T_SZ (sizeof(i_code_t))
+#define ORDER_SWAP_I_CODE_T(x) ORDER_SWAP(i_code_t, x)
 
 /*************************************
 // class code root