Review Request 124372: Fix crash when MigrationAgent::isEmptyOldWallet() check fails

[Daniel Vrátil]

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https://git.reviewboard.kde.org/r/124372/
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Review request for KDE Frameworks and Valentin Rusu.


Repository: kwallet


Description
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When the DBus call in `invokeAndCheck()` fails when called from `MigrationAgent::isEmptyOldWallet()`, the code would crash because the `migrationAgent` global variable was not set (it's only set in `MigrationAgent::performMigration()`). Since global variables are evil ;-), this patch makes the `invokeAndCheck()` template to take the `MigrationAgent` instance pointer as an argument.


Diffs
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  src/runtime/kwalletd/migrationagent.cpp a2a6498 

Diff: https://git.reviewboard.kde.org/r/124372/diff/


Testing
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Thanks,

Daniel Vrátil

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