altosuilib: Allow config to be missing in rom config dialog
authorKeith Packard <keithp@keithp.com>
Sun, 23 Aug 2020 22:34:26 +0000 (15:34 -0700)
committerKeith Packard <keithp@keithp.com>
Sun, 23 Aug 2020 22:34:26 +0000 (15:34 -0700)
If the configuration data can't be fetched from the target board, it
will be missing while building the dialog box. Deal with that.

Signed-off-by: Keith Packard <keithp@keithp.com>

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