Fix: a couple bugs with wizmode command #wizspell.

From EvilHack commit 68be09ac32

src/cmd.c

@@ -980,19 +980,24 @@ wiz_map(VOID_ARGS)
     return 0;
 }
 
-/* ^S command - cast any spell. */
+/* ^S command - cast any spell, does not require energy to use */
 STATIC_PTR int
 wiz_spell(VOID_ARGS)
 {
     char buf[BUFSZ] = DUMMY;
     int last_spbook, i;
+
     while (buf[0] == '\0' || buf[0] == '\033') {
-        getlin("What spell do you successfully cast without energy use?", buf);
+        getlin("Which spell to cast?", buf);
         (void) mungspaces(buf);
     }
-    last_spbook = (SPBOOK_CLASS + 1 < MAXOCLASSES ? bases[SPBOOK_CLASS + 1] : NUM_OBJECTS) - 1;
+
+    last_spbook = (SPBOOK_CLASS + 1 < MAXOCLASSES
+                   ? bases[SPBOOK_CLASS + 1] : NUM_OBJECTS) - 1;
+
     for (i = bases[SPBOOK_CLASS]; i <= last_spbook; ++i) {
-        if (objects[i].oc_skill < P_FIRST_SPELL || objects[i].oc_skill > P_LAST_SPELL)
+        if (objects[i].oc_skill < P_FIRST_SPELL
+            || objects[i].oc_skill > P_LAST_SPELL)
             continue;
         if (!strcmpi(buf, OBJ_NAME(objects[i]))) {
             /* pline("Casting [%d] %s", i, buf); */

src/spell.c

@@ -1241,7 +1241,7 @@ boolean wiz_cast;
        added per cast. the players intelligence must be greater than 6
        to be able to help remember spells as they're cast. cavepersons
        are the one role that do not have this benefit */
-    if (!Role_if(PM_CAVEMAN) && ACURR(A_INT) > 6) {
+    if (!wiz_cast && !Role_if(PM_CAVEMAN) && ACURR(A_INT) > 6) {
         spl_book[spell].sp_know += rn1(ACURR(A_INT) * 5, ACURR(A_INT) * 2);
         if (spl_book[spell].sp_know >= KEEN)
             spl_book[spell].sp_know = KEEN;
@@ -1314,7 +1314,8 @@ boolean wiz_cast;
         } else if (role_skill >= P_SKILLED) {
             /* player said not to cast advanced spell; return up to half of the
              * magical energy */
-            u.uen += rnd(energy / 2);
+            if (!wiz_cast)
+                u.uen += rnd(energy / 2);
         }
         /*FALLTHRU*/