Pets considered any noise made by hero as whistling

In 3.6.2 parts of the wakeup code were merged together, and this
caused pets consider any noise made by the hero - such as hitting
iron bars or digging - as whistling for them to come to the hero.

Change it to only consider actual whistling and ringing a bell.

src/pray.c

@@ -2193,7 +2193,7 @@ prayer_done(void) /* M. Stephenson (1.0.3b) */
         /* praying at an unaligned altar, not necessarily in Gehennom */
         You("%s diabolical laughter all around you...",
             !Deaf ? "hear" : "intuit");
-        wake_nearby();
+        wake_nearby(FALSE);
         adjalign(-2);
         exercise(A_WIS, FALSE);
         if (!Inhell) {