Clean up memory leaks and uninitialized variables detected by valgrind.

Identify all tests where we deliberately derefence freed memory by adding
a "-misuse" tag. (CVS 3550)

FossilOrigin-Name: 70a862702d6dfcfe73bdeef8f0502c6c50e32a3a

test/btree.test

@@ -11,7 +11,7 @@
 # This file implements regression tests for SQLite library.  The
 # focus of this script is btree database backend
 #
-# $Id: btree.test,v 1.37 2006/08/16 16:42:48 drh Exp $
+# $Id: btree.test,v 1.38 2007/01/03 23:37:29 drh Exp $
 
 
 set testdir [file dirname $argv0]
@@ -548,7 +548,6 @@ do_test btree-8.1 {
 } {}
 btree_page_dump $::b1 1
 btree_page_dump $::b1 2
-btree_page_dump $::b1 3
 do_test btree-8.1.1 {
   lindex [btree_pager_stats $::b1] 1
 } {1}