Fix latent -Wall warnings the v0.74.0 cycle introduced

Three warnings show up when an embedder builds the mino tree as a
single cc invocation (mino-lsp, mino-nrepl): another /* inside a
block comment in ns_env.c (the *ns* var publish helper carries the
same slash-star pattern fixed earlier in install.c), an unused
mino_val_t local in read_namespaced_map, and an unused env parameter
on eval_declare.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: leifericf

src/eval/defs.c

@@ -595,6 +595,7 @@ mino_val_t *eval_declare(mino_state_t *S, mino_val_t *form,
                          mino_val_t *args, mino_env_t *env, int tail)
 {
     mino_val_t *rest = args;
+    (void)env;
     (void)tail;
     while (mino_is_cons(rest)) {
         mino_val_t *sym = rest->as.cons.car;

src/eval/read.c

@@ -1505,7 +1505,6 @@ static mino_val_t *read_namespaced_map(mino_state_t *S, const char **p)
     char        prefix[256];
     size_t      prefix_len = 0;
     int         saw_double_colon = 0;
-    mino_val_t *m;
     mino_val_t *out;
     int         line = S->reader_line;
     int         col  = S->reader_col;

src/runtime/ns_env.c

@@ -129,11 +129,11 @@ mino_val_t *ns_symbol_with_meta(mino_state_t *S, const char *name)
     return sym;
 }
 
-/* Update clojure.core/*ns*'s root binding to a fresh symbol naming the
- * current namespace, so (deref (find-var 'clojure.core/*ns*)) tracks
- * user-visible namespace switches. No-op when the var has not yet been
- * interned (init order: install.c interns it after the primitives are
- * registered). */
+/* Update the clojure.core *ns* var's root binding to a fresh symbol
+ * naming the current namespace, so deref of (find-var) on the qualified
+ * name tracks user-visible namespace switches. No-op when the var has
+ * not yet been interned (init order: install.c interns it after the
+ * primitives are registered). */
 void mino_publish_current_ns(mino_state_t *S)
 {
     mino_val_t *var;