Fix #2813 #2824
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Fix #2813 #2824
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Ensures the lifetime of argc/argv is greater than the QApplication, and that argv is non-empty. This conforms with Qt docs.
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Fixes #2813.
In openConfigDialog, moves argc/argv to a higher scope so their lifetime is longer than the lifetime of the QApplication. (My first suggestion of
staticlifetime would have been wrong.)In both openConfigDialog and openAboutDialog, makes sure argv is non-empty.
Both changes are to conform to Qt's docs.