wm: glendy

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cli: ensure trapper can't put walls on glenda

--- a/cli.c

+++ b/cli.c

@@ -79,9 +79,11 @@

 		fprintf(stderr, "proc_put(): invalid input, x = %d, y = %d\n", x, y);

 		return;

 	}

-

-	if(doput(Pt(x, y)) == Wall)

+	r = doput(Pt(x, y));

+	if(r == Wall)

 		fprintf(stderr, "There is already a wall in x = %d, y = %d\n", x, y);

+	else if(r == Glenda)

+		fprintf(stderr, "You can't put a wall on glenda!\n");

 }

 /* m x y */