Always add braces

Small matter of code style that I keep coming across.

Whether to write

if (thing) Action();

or

if (thing)
{
    Action();
}

We should always use the latter to avoid introducing bugs when modifying the code manually or through merge tools.

For the reasons behind this, read the following:

• https://www.joelonsoftware.com/2005/05/11/making-wrong-code-look-wrong/
• https://dzone.com/articles/omitting-braces-not-just-a-mat
• https://nakedsecurity.sophos.com/2014/02/24/anatomy-of-a-goto-fail-apples-ssl-bug-explained-plus-an-unofficial-patch/