diff --git a/src/vault.c b/src/vault.c
index 9335c4ac6..31002f65f 100644
--- a/src/vault.c
+++ b/src/vault.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	vault.c	$NHDT-Date: 1657868307 2022/07/15 06:58:27 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.91 $ */
+/* NetHack 3.7	vault.c	$NHDT-Date: 1737622664 2025/01/23 00:57:44 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.113 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Robert Patrick Rankin, 2011. */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -888,7 +888,7 @@ gd_move(struct monst *grd)
 
     if (!on_level(&(egrd->gdlevel), &u.uz))
         return -1;
-    nx = ny = m = n = 0;
+
     if (semi_dead || !grd->mx || egrd->gddone) {
         egrd->gddone = 1;
         return gd_move_cleanup(grd, semi_dead, FALSE);
@@ -1033,6 +1033,7 @@ gd_move(struct monst *grd)
             }
         }
     }
+    m = n = 0;
     for (fci = egrd->fcbeg; fci < egrd->fcend; fci++)
         if (g_at(egrd->fakecorr[fci].fx, egrd->fakecorr[fci].fy)) {
             m = egrd->fakecorr[fci].fx;
diff --git a/src/version.c b/src/version.c
index 34085a8af..e6b675ed3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	version.c	$NHDT-Date: 1655402415 2022/06/16 18:00:15 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.92 $ */
+/* NetHack 3.7	version.c	$NHDT-Date: 1737622664 2025/01/23 00:57:44 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.105 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Michael Allison, 2018. */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -416,6 +416,8 @@ uptodate(NHFILE *nhfp, const char *name, unsigned long utdflags)
 
     if (nhfp->structlevel) {
         rlen = read(nhfp->fd, (genericptr_t) &indicator, sizeof indicator);
+        if (rlen != sizeof indicator)
+            return FALSE;
         rlen = read(nhfp->fd, (genericptr_t) &filecmc, sizeof filecmc);
         if (rlen == 0)
             return FALSE;