Sqlite: Add a dtor to Database

The base class TransactionInterface has a virtual destructor that is not
exported. This means we get linker errors when trying to use Database in
a different library.

Change-Id: Iba431a627dca32d59ea7316b7f3eb07fa209c60f
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/libs/sqlite/sqlitedatabase.cpp

@@ -42,6 +42,10 @@ Database::Database(Utils::PathString &&databaseFilePath, JournalMode journalMode
     open(std::move(databaseFilePath));
 }
 
+Database::~Database()
+{
+}
+
 void Database::open()
 {
     m_databaseBackend.open(m_databaseFilePath, m_openMode);