fix self-recover prompting on windows

the prompting on Windows wasn't working correctly if a prior game had crashed
and the self-recover feature was trying to kick in. This impacts tty, curses,
and mswin (GUI).

include/extern.h

@@ -1823,15 +1823,17 @@ E char *FDECL(dowhatdoes_core, (CHAR_P, char *));
 E int NDECL(dohelp);
 E int NDECL(dohistory);
 
-/* ### pcmain.c ### */
+/* ### xxmain.c ### */
 
 #if defined(MICRO) || defined(WIN32)
 #ifdef CHDIR
 E void FDECL(chdirx, (char *, BOOLEAN_P));
 #endif /* CHDIR */
 E boolean NDECL(authorize_wizard_mode);
-
 #endif /* MICRO || WIN32 */
+#if defined(WIN32)
+E int NDECL(getlock);
+#endif
 
 /* ### pcsys.c ### */
 
@@ -1869,10 +1871,10 @@ E void FDECL(msleep, (unsigned));
 
 #if defined(MICRO)
 E void FDECL(regularize, (char *));
-#endif /* MICRO */
 #if defined(PC_LOCKING)
 E void NDECL(getlock);
 #endif
+#endif /* MICRO */
 
 /* ### pickup.c ### */