U260 - waiting times out for no reason while in were form

The initial report thought this was related to summoning help.  It's not.
moveloop would attempt to call you_were() even when you_were() would not
actually change your form.  Certainly there's a layering problem here, but
for now, just put in the same check peffects() uses to avoid calling
you_were() unnecessarily.

doc/fixes34.1

@@ -381,6 +381,7 @@ applying figurines to an adjacent spot over water does drowning checks
 fix sequencing of Magicbane's hit messages
 avoid buffer overflow from long or too many -s params
 wake up first if trying to crawl out of water while asleep
+while waiting, don't try to change into were form when already in were form
 
 
 Platform- and/or Interface-Specific Fixes

src/allmain.c

@@ -240,7 +240,8 @@ moveloop()
 			    change = 0;
 			if(Polymorph && !rn2(100))
 			    change = 1;
-			else if (u.ulycn >= LOW_PM && !rn2(80 - (20 * night())))
+			else if (u.ulycn >= LOW_PM && !Upolyd &&
+				 !rn2(80 - (20 * night())))
 			    change = 2;
 			if (change && !Unchanging) {
 			    if (multi >= 0) {