Reenable the memory management logic. The quick.test script now runs with

SQLITE_MEMDEBUG and SQLITE_ENABLE_MEMORY_MANAGEMENT. 7 minor errors. (CVS 4265)

FossilOrigin-Name: 1914044b8832041f13b20ead613bd13725425d7a

src/vdbeapi.c

@@ -44,9 +44,10 @@ int sqlite3_finalize(sqlite3_stmt *pStmt){
     rc = SQLITE_OK;
   }else{
     Vdbe *v = (Vdbe*)pStmt;
-    sqlite3_mutex_enter(v->db->mutex);
+    sqlite3_mutex *mutex = v->db->mutex;
+    sqlite3_mutex_enter(mutex);
     rc = sqlite3VdbeFinalize(v);
-    sqlite3_mutex_leave(v->db->mutex);
+    sqlite3_mutex_leave(mutex);
   }
   return rc;
 }