Ring of stealth prevents hero from leaving tracks

doc/fixes3-7-0.txt

@@ -2900,6 +2900,7 @@ monsters will use throw-and-return weapons such as an aklys
 archeologists can identify scrolls by deciphering their labels
 monster destroy armor -spell first erodes armor
 iron shoes protect the wearer against certain floor-based traps
+ring of stealth prevents hero from leaving tracks
 
 
 Platform- and/or Interface-Specific New Features

src/track.c

@@ -23,6 +23,10 @@ initrack(void)
 void
 settrack(void)
 {
+    if ((uleft && uleft->otyp == RIN_STEALTH)
+        || (uright && uright->otyp == RIN_STEALTH))
+        return;
+
     if (utcnt < UTSZ)
         utcnt++;
     if (utpnt == UTSZ)