Fix bug where if statement body could be incorrectly parsed as trailing closure

[calda]

This PR fixes a bug where the body of an if statement could be incorrectly parsed as a trailing closure.

This fixes an issue where the redundantProperty rule would incorrectly convert this code:

func foo() -> Foo {
    let foo = Foo(bar: bar, baaz: baaz)

    if let foo = foo.nestedFoo {
        print(foo)
    }

    return foo
}

to:

func foo() -> Foo {
    let foo = Foo(bar: bar, baaz: baaz)

    if return foo.nestedFoo {
        print(foo)
    }
}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.16%. Comparing base (49330c8) to head (3b64a83).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1719      +/-   ##
===========================================
- Coverage    95.17%   95.16%   -0.01%     
===========================================
  Files           20       20              
  Lines        23177    23185       +8     
===========================================
+ Hits         22058    22065       +7     
- Misses        1119     1120       +1     

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