Fix possible resource leaks in test

[tvladyslav]

We should be careful on exit and remember to close files / free memory. Even in tests.

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This change is 

[CLAassistant]

All committers have signed the CLA.

[iphydf]

Reviewable status: 0 of 1 approvals obtained (waiting on @crypto-universe)

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testing/Messenger_test.c, line 181 at r1 (raw file):

    while (1) {
        uint8_t name[128];
        const char* filename = "Save.bak";

const char *const filename

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testing/Messenger_test.c, line 197 at r1 (raw file):

        uint8_t *buffer = (uint8_t *)malloc(messenger_size(m));
        if (buffer == nullptr) {

Run other/astyle/format-source.

[tvladyslav]

@iphydf astyle is an interesting tool, never seen it before :)

[iphydf]

@crypto-universe it's a terrible tool, but for now we're stuck with it. Thanks for this fix PR :).

[iphydf]

Reviewed 1 of 1 files at r2.
Reviewable status: 1 change requests, 0 of 1 approvals obtained (waiting on @crypto-universe)