close and delete private DbEnv after the Db is closed. closes #233

git-svn-id: file:///svn/tokudb@1412 c7de825b-a66e-492c-adef-691d508d4ae1

cxx/db.cpp

@@ -27,14 +27,14 @@ Db::Db(DbEnv *env, u_int32_t flags)
 }
 
 Db::~Db() {
-    if (is_private_env && the_Env) {
-	the_Env->close(0);
-	delete the_Env;
-    }
     if (the_db) {
 	close(0); // the user should have called close, but we do it here if not done.
 	assert(the_db==0);
     }
+    if (is_private_env && the_Env) {
+	the_Env->close(0);
+	delete the_Env;
+    }
 }
 
 int Db::close (u_int32_t flags) {

cxx/tests/Makefile

@@ -31,3 +31,4 @@ check: $(TARGETS)
 	$(VGRIND) ./db_dump_e foo.db > foo.out
 	diff foo.out foo.expectout
 	$(VGRIND) ./exceptions
+	$(VGRIND) ./test_no_env
\ No newline at end of file