malloc->calloc

tree.c

@@ -48,7 +48,7 @@ struct tree *create_tree(FILE *file)
 		freq[c]++;
 	}
 
-	struct tree **forest = malloc((charcount) * sizeof(struct tree));
+	struct tree **forest = calloc(charcount, sizeof(struct tree));
 
 	/* Create empty forest - whoah */
 	int ntrees = 0;