Don't backup the database and not rewrite a new one (oops?)

git-svn-id: http://anope.svn.sourceforge.net/svnroot/anope/trunk@2887 5417fbe8-f217-4b02-8779-1006273d7864

src/core/db_plain.cpp

@@ -539,6 +539,13 @@ class DBPlain : public Module
 
 	void BackupDatabase()
 	{
+		/* Do not backup a database that doesn't exist */
+		struct stat DBInfo;
+		if (stat(DatabaseFile.c_str(), &DBInfo))
+		{
+			return;
+		}
+
 		time_t now = time(NULL);
 		tm *tm = localtime(&now);
 
@@ -887,6 +894,8 @@ class DBPlain : public Module
 
 	EventReturn OnSaveDatabase()
 	{
+		BackupDatabase();
+
 		db.open(DatabaseFile.c_str(), std::ios_base::out | std::ios_base::trunc);
 
 		if (!db.is_open())
@@ -1172,8 +1181,6 @@ class DBPlain : public Module
 
 		db.close();
 
-		BackupDatabase();
-
 		return EVENT_CONTINUE;
 	}