#1 Dirty flag not updated on save

[ElLocoGato]

The dirty flag (asterisk in title bar) is not updated when saving the file.

Version: 1.02

Steps to Reproduce
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- Open a .pft file
- Make a modification (asterisk appears in title bar)
- Ctrl-s

Expected result:
Asterisk should disappear from title bar

Actual result:
Asterisk remains in title bar

The problem seems to be in CMainFrame::DoFileSave(). If the save is successful, m_bModified is set to FALSE, but the screen is not refreshed.