OS/2 only tinderbox break - we will probably still break on a link, but at least we will compile

dbm/include/mcom_db.h

@@ -201,9 +201,9 @@ XP_END_PROTOS
 
 #if defined(XP_OS2)
 /* #include <xp_mcom.h> */
-XP_BEGIN_PROTOS
-int mkstemp(char *path);
-XP_END_PROTOS
+/* XP_BEGIN_PROTOS */
+/* int mkstemp(char *path); */
+/* XP_END_PROTOS */
 #endif
 
 #ifndef macintosh