Fix possible division by zero error #22
Merged
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What does this pull request do?
This PR fixes a possible "division by zero" error when explicitly setting zero as progress when the currently made progress is also zero.
Fixes #21
Why is this pull request needed?
This library should gracefully finish the progress bar instead of displaying a PHP-specific error.
How does this pull request work?
Progress is now explicitly set to at least one during the remaining time calculation. Furthermore a new boolean value is placed to track whether
maxProgresswas meant to be zero asmaxProgressitself cannot be zero when displaying the progress bar.