SC1049

Did you forget the 'then' for this 'if'?

Problematic code:

if true
  echo "foo"
elif true
  echo "bar"
fi

Correct code:

if true
then
  echo "foo"
elif true
then
  echo "bar"
fi```

### Rationale:

ShellCheck found a parsing error in the script, and determined that it's most likely due to a missing `then` keyword for the `if` or `elif` indicated.

Make sure the `then` is there. It needs `;` or linefeed before it (e.g. `if true; then`, not `if true then`).

### Exceptions:

None