Review Request 126410: Fix FILE* leak in kwalletd

[Michael Pyne]

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https://git.reviewboard.kde.org/r/126410/
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Review request for KDE Frameworks, Martin Klapetek and Valentin Rusu.


Repository: kwallet


Description
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Fix a leak of a `FILE*` in kwalletd, spotted by Coverity (CID 1335090), and a couple of minor fixes/cleanups since I was there.

1. No need to memset a `char[]`, you can let compiler default-initialize it (and likely even be able to move the whole array into .bss).
2. The chop after `fgets` can easily be confused for a null terminator check, and `fgets` isn't required to return a newline anyways, so add sanity checking (which helps document better at the same time).


Diffs
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  src/runtime/kwalletd/main.cpp db8d55c 

Diff: https://git.reviewboard.kde.org/r/126410/diff/


Testing
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Everything compiles. Not much beyond done.


Thanks,

Michael Pyne

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