Fix a couple of test files so that they work with DEFAULT_AUTOVACUUM.

FossilOrigin-Name: 8cb39306f4bd9104c9d15d5ee98ec1252e798997

test/memsubsys1.test

@@ -98,7 +98,7 @@ build_test_db memsubsys1-2 {PRAGMA page_size=1024}
 #show_memstats
 do_test memsubsys1-2.3 {
   set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
-} 0
+} [expr $AUTOVACUUM*1024]
 do_test memsubsys1-2.4 {
   set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
 } 20

test/stat.test

@@ -27,6 +27,7 @@ db func a_string a_string
 
 register_dbstat_vtab db
 do_execsql_test stat-0.0 {
+  PRAGMA auto_vacuum = OFF;
   CREATE VIRTUAL TABLE temp.stat USING dbstat;
   SELECT * FROM stat;
 } {}
@@ -143,6 +144,7 @@ sqlite3 db test.db
 register_dbstat_vtab db
 breakpoint
 do_execsql_test stat-5.1 {
+  PRAGMA auto_vacuum = OFF;
   CREATE VIRTUAL TABLE temp.stat USING dbstat;
   CREATE TABLE t1(x);
   INSERT INTO t1 VALUES(zeroblob(1513));