Dont backup the database unless there is a database to backup

git-svn-id: http://anope.svn.sourceforge.net/svnroot/anope/trunk@2884 5417fbe8-f217-4b02-8779-1006273d7864

src/core/db_plain.cpp

@@ -887,8 +887,6 @@ class DBPlain : public Module
 
 	EventReturn OnSaveDatabase()
 	{
-		BackupDatabase();
-
 		db.open(DatabaseFile.c_str(), std::ios_base::out | std::ios_base::trunc);
 
 		if (!db.is_open())
@@ -1174,6 +1172,8 @@ class DBPlain : public Module
 
 		db.close();
 
+		BackupDatabase();
+
 		return EVENT_CONTINUE;
 	}