[Bugs] [Bug 1640165] io-stats: garbage characters in the filenames generated

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1640165



--- Comment #2 from Nithya Balachandran <nbalacha at redhat.com> ---
RCA:

dict_unserialize does not null terminate values. conditional_dump () uses
snprintf to create the filename causing a lot of garbage characters to be
included in the buffer.

Fix: Use memcpy.

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