Fix: confused enchanting dragon scales

The dtsund-DSM patch made it so that confused enchant armor would polymorph you into a dragon if wearing dragon scales. Between adding the ability to choose which armor piece to enchant, refactoring that addition, and adding code to prevent fooproofing supermaterials, this particular behavior was overridden by a general confused-enchant-armor case. Restore the original dtsund behavior (if the dragon scales are chosen/the scroll is not IDed).

Author: saltwaterterrapin

doc/evilhack-changelog.md

@@ -3325,3 +3325,4 @@ The following changes to date are:
 - Fix: prevent monsters that are carrying the Amulet of Yendor from
   being teleported while in the Sanctum
 - Fix: don't allow tipping a floor container into itself II
+- Fix: confused enchanting dragon scales

src/read.c

@@ -1141,7 +1141,8 @@ struct obj *sobj; /* sobj - scroll or fake spellbook for spell */
             exercise(A_STR, !scursed);
             break;
         }
-        if (confused) {
+        /* dragon scales are handled later and shouldn't/can't become fixed */
+        if (confused && !Is_dragon_scales(otmp)) {
             old_erodeproof = (otmp->oerodeproof != 0);
             new_erodeproof = !scursed;
             otmp->oerodeproof = 0; /* for messages */