Update to new libxkbcommon API
We no longer depend on xproto, we use xkbcommon keycodes now. Yay!
diff --git a/src/compositor-x11.c b/src/compositor-x11.c
index dca2324..0777d77 100644
--- a/src/compositor-x11.c
+++ b/src/compositor-x11.c
@@ -737,7 +737,7 @@
length_part = strlen(value_part); \
if (value_part + length_part > (value_all + length_all) && \
length_part > 0 && c->base.xkb_info.names.to == NULL) { \
- free(c->base.xkb_info.names.to); \
+ free((char *) c->base.xkb_info.names.to); \
c->base.xkb_info.names.to = strdup(value_part); \
} \
value_part += length_part + 1;