Add braces to all if statements.

[iphydf]

Also, removed friends_test, since it's been unused for a long time, and porting it to new internal APIs is not worth it.

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This change is

[JFreegman]

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Reviewed 53 of 53 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved.

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Comments from Reviewable

[nurupo]

Reviewed 53 of 53 files at r1.
Review status: all files reviewed at latest revision, 7 unresolved discussions.

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testing/DHT_test.c, line 218 [r1] (raw file):

    }

2 many empty lines.

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testing/dns3_test.c, line 82 [r1] (raw file):

    uint32_t request_id;

Why empty lines?

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testing/irc_syncbot.c, line 151 [r1] (raw file):

            sendbuf[i] = ' ';

        }

Empty lines again.

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testing/Messenger_test.c, line 182 [r1] (raw file):

    }

Empty lines.

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toxav/video.c, line 149 [r1] (raw file):

    struct RTPMessage *p;

Random new line introduction.

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toxcore/Messenger.c, line 1187 [r1] (raw file):

    ft->paused = FILE_PAUSE_NOT;

New lines again.

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toxcore/network.c, line 315 [r1] (raw file):

    struct sockaddr_storage addr;

Empty line again.

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Comments from Reviewable

[iphydf]

Review status: 41 of 52 files reviewed at latest revision, 7 unresolved discussions.

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testing/DHT_test.c, line 218 [r1] (raw file):

Previously, nurupo wrote…

2 many empty lines.

Done.

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testing/dns3_test.c, line 82 [r1] (raw file):

Previously, nurupo wrote…

Why empty lines?

Done.

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testing/irc_syncbot.c, line 151 [r1] (raw file):

Previously, nurupo wrote…

Empty lines again.

Done.

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testing/Messenger_test.c, line 182 [r1] (raw file):

Previously, nurupo wrote…

Empty lines.

Done.

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toxav/video.c, line 149 [r1] (raw file):

Previously, nurupo wrote…

Random new line introduction.

Done.

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toxcore/Messenger.c, line 1187 [r1] (raw file):

Previously, nurupo wrote…

New lines again.

Done.

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toxcore/network.c, line 315 [r1] (raw file):

Previously, nurupo wrote…

Empty line again.

Done.

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Comments from Reviewable

[nurupo]

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Reviewed 11 of 13 files at r2.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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Comments from Reviewable

[nurupo]

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Reviewed 2 of 13 files at r2, 4 of 4 files at r3.
Review status: all files reviewed at latest revision, all discussions resolved.

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Comments from Reviewable