Fix: Lava gremlin exploding a forge.

If a lava gremlin walks onto a forge, there's a chance the forge will
blow up. The routine in blowupforge() was mistakenly positioning the
explosion onto the players location instead of the forge itself.

Author: k21971

doc/evilhack-changelog.md

@@ -3387,4 +3387,5 @@ The following changes to date are:
 - Re-add regular bracers, minor bug fixes from initial Druid commit
 - Re-add encyclopedia and guidebook entries (bracers, existing roles)
 - 'Deslog' the first wizard's tower level
+- Lava gremlin exploding a forge
 

src/fountain.c

@@ -1166,7 +1166,7 @@ int x, y;
     levl[x][y].doormask = 0;
     newsym(x, y);
     level.flags.nforges--;
-    explode(u.ux, u.uy, ZT_FIRE, resist_reduce(rnd(30), FIRE_RES),
+    explode(x, y, ZT_FIRE, resist_reduce(rnd(30), FIRE_RES),
             FORGE_EXPLODE, EXPL_FIERY);
 }