fix commit ebd6bb62f5 : #H4383 - blasted twice

by Excalibur.  Noticed on Reddit by Alex, the attempt to fix being
blasted twice by wielded artifact weapon when changing alignment
ended up preventing wielding other role's quest weapons.  At the
moment I can't even see how it prevented the double-blast....

This backs out that change and fixes the double-blasting correctly.
When uwep and uswapwep are tested in advance of the rest of invent,
mark them as already processed before entering the loop that checks
all not-yet-processed inventory.

doc/fixes36.1

@@ -455,6 +455,8 @@ attempting to name an item as an artifact and failing via hand slip violates
 crashes for 'A' above were downgraded to impossible "cursed without otmp"
 wizhelp: ^O is #overview in wizard mode too; #wizwhere shows dungeon layout
 wishing for tins sometimes yielded a tin wand
+replace the fix for preventing putting on a helm of opposite alignment from
+	causing wielded Excalibur from blasting hero twice
 
 
 Platform- and/or Interface-Specific Fixes

src/artifact.c

@@ -1888,7 +1888,7 @@ boolean loseit;    /* whether to drop it if hero can longer touch it */
                 bane = bane_applies(get_artifact(obj), &youmonst);
 
         /* nothing else to do if hero can successfully handle this object */
-        if (!ag && !bane && !touch_blasted)
+        if (!ag && !bane)
             return 1;
 
         /* hero can't handle this object, but didn't get touch_artifact()'s
@@ -2008,11 +2008,15 @@ int dropflag; /* 0==don't drop, 1==drop all, 2==drop weapon */
 
     dropit = (dropflag > 0); /* drop all or drop weapon */
     /* check secondary weapon first, before possibly unwielding primary */
-    if (u.twoweap)
+    if (u.twoweap) {
+        bypass_obj(uswapwep); /* so loop below won't process it again */
         (void) untouchable(uswapwep, dropit);
+    }
     /* check primary weapon next so that they're handled together */
-    if (uwep)
+    if (uwep) {
+        bypass_obj(uwep); /* so loop below won't process it again */
         (void) untouchable(uwep, dropit);
+    }
 
     /* in case someone is daft enough to add artifact or silver saddle */
     if (u.usteed && (obj = which_armor(u.usteed, W_SADDLE)) != 0) {