Make wood golem death drops more varied

doc/fixes3-7-0.txt

@@ -812,6 +812,8 @@ heroes starting with a spell have at least one level one spell, and
 huge monsters get easily out of pits
 give a message when a trapped monster frees itself from some trap
 change kitchen sink glyph to a white {
+killed wood golem has a chance to also drop small shields, clubs,
+	elven spears, and boomerangs
 
 
 Fixes to 3.7.0-x Problems that Were Exposed Via git Repository

src/mon.c

@@ -598,7 +598,12 @@ make_corpse(struct monst *mtmp, unsigned int corpseflags)
     case PM_WOOD_GOLEM:
         num = d(2, 4);
         while (num--) {
-            obj = mksobj_at(QUARTERSTAFF, x, y, TRUE, FALSE);
+            obj = mksobj_at(
+                            rn2(2) ? QUARTERSTAFF
+                            : rn2(3) ? SMALL_SHIELD
+                            : rn2(3) ? CLUB
+                            : rn2(3) ? ELVEN_SPEAR : BOOMERANG,
+                            x, y, TRUE, FALSE);
         }
         free_mgivenname(mtmp);
         break;