Field is conditionally defined, code referring to it isn't

src/options.c

@@ -2663,9 +2663,11 @@ char *buf;
 				   defopt);
 	else if (!strcmp(optname,"align"))
 		Sprintf(buf, "%s", rolestring(flags.initalign, aligns, adj));
+#ifdef WIN32CON
 	else if (!strcmp(optname,"altkeyhandler"))
 		Sprintf(buf, "%s", iflags.altkeyhandler[0] ?
 			iflags.altkeyhandler : "default");
+#endif
 	else if (!strcmp(optname, "boulder"))
 		Sprintf(buf, "%c", iflags.bouldersym ?
 			iflags.bouldersym : oc_syms[(int)objects[BOULDER].oc_class]);