keymap: don't use XKB_NUM_GROUPS for key->kt_index

One unneeded XKB_NUM_GROUPS less.

Signed-off-by: Ran Benita <ran234@gmail.com>

src/keymap.c

@@ -99,6 +99,7 @@ xkb_keymap_unref(struct xkb_keymap *keymap)
         free(key->num_syms);
         free(key->syms);
         free(key->actions);
+        free(key->kt_index);
     }
     darray_free(keymap->keys);
     darray_free(keymap->sym_interpret);

src/keymap.h

@@ -320,7 +320,7 @@ struct xkb_key {
 
     union xkb_action *actions;
 
-    unsigned kt_index[XKB_NUM_GROUPS];
+    unsigned *kt_index;
 
     xkb_layout_index_t num_groups;
     /* How many levels the largest group has. */

src/xkbcomp/symbols.c

@@ -1500,6 +1500,7 @@ out_of_loops:
      * Find and assign the groups' types in the keymap. Also find the
      * key width according to the largest type.
      */
+    key->kt_index = calloc(key->num_groups, sizeof(*key->kt_index));
     key->width = 0;
     darray_enumerate(i, groupi, keyi->groups) {
         struct xkb_key_type *type;