Clean up some comments.

advent.h

@@ -257,7 +257,7 @@ struct game_t {
 		bool32_t found; // has the location of this object been found?
 #endif
 		loc_t fixed;  // fixed location of object (if not IS_FREE)
-		int32_t prop; // object state */
+		int32_t prop; // object state
 		loc_t place;  // location of object
 	} objects[NOBJECTS + 1];
 	struct {

init.c

@@ -77,7 +77,7 @@ int initialise(void) {
 	 *  STATE_FOUND the first time they are described.  game.tally
 	 *  keeps track of how many are not yet found, so we know when to
 	 *  close the cave.
-	 *  (ESR) Non-trreasures are set to STATE_FOUND explicity so we
+	 *  (ESR) Non-treasures are set to STATE_FOUND explicitly so we
 	 *  don't rely on the value of uninitialized storage. This is to
 	 *  make translation to future languages easier. */
 	for (int object = 1; object <= NOBJECTS; object++) {

misc.c

@@ -622,11 +622,9 @@ void move(obj_t object, loc_t where) {
 }
 
 void put(obj_t object, loc_t where, int pval) {
-	/*  put() is the same as move(), except it returns a value used to set
-	 * up the negated game.prop values for the repository objects. */
+	/* put() is the same as move(), except the object is stashed and
+	 * can no longer be picked up. */
 	move(object, where);
-	/* (ESR) Read this in combination with the macro defintions in advent.h.
-	 */
 	game.objects[object].prop = PROP_STASHIFY(pval);
 #ifdef OBJECT_SET_SEEN
 	OBJECT_SET_SEEN(object);