drop some useless return statements

code/tools/asm/q3asm.c

@@ -250,7 +250,6 @@ static void hashtable_init (hashtable_t *H, int buckets)
 {
   H->buckets = buckets;
   H->table = calloc(H->buckets, sizeof(*(H->table)));
-  return;
 }
 
 static hashtable_t *hashtable_new (int buckets)
@@ -285,7 +284,6 @@ static void hashtable_add (hashtable_t *H, int hashvalue, void *datum)
     }
   hc->data = datum;
   hc->next = 0;
-  return;
 }
 
 static hashchain_t *hashtable_get (hashtable_t *H, int hashvalue)