fix a segfault in free_Races

src/kernel/config.c

@@ -203,7 +203,7 @@ param_t findparam(const char *s, const struct locale * lang)
         void **tokens = get_translations(lang, UT_PARAMS);
         critbit_tree *cb = (critbit_tree *)*tokens;
         if (!cb) {
-            log_warning("no parameters defined in locale %s", locale_name(lang));
+            log_error("no parameters defined in locale %s", locale_name(lang));
         }
         else if (cb_find_prefix(cb, str, strlen(str), &match, 1, 0)) {
             cb_get_kv(match, &i, sizeof(int));

src/kernel/race.c

@@ -269,7 +269,13 @@ void free_races(void) {
             free(opt);
         }
         for (i = 0; races->attack[i].type!=AT_NONE; ++i) {
-            spellref_free(races->attack[i].data.sp);
+            att *at = races->attack + i;
+            if (at->type == AT_SPELL) {
+                spellref_free(at->data.sp);
+            }
+            else {
+                free(at->data.dice);
+            }
         }
         spellref_free(races->precombatspell);
         free(xrefs);

src/kernel/race.h

@@ -105,7 +105,7 @@ extern "C" {
     typedef struct att {
         int type;
         union {
-            const char *dice;
+            char *dice;
             struct spellref *sp;
         } data;
         int flags;