fix bug where the 'analyze' would try to parse results from non-plists.
fix bug where the 'analyze' would try to parse results from non-plists.

For some reason, `-[NSRegularExpression firstMatchInString:options:range:]`
has begun returning nil when there's no match.  This didn't use to
happen, and the docs don't suggest it would happen... it could be a
legit apple bug.

This silences the `Old-style plist parser: missing semicolon in
dictionary on line 2. Parsing will be abandoned.` warnings we've seen.

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