Misleading indent var warn

[DanilaFe]

This was caused by the incorrect location reporting for variables. If the code above is 4-indented, and then location of the name is used, that name is also 4-indented, code flags as misleading.

As an example:

      for 1..10 do
          writeln("Hello, world!");
      var unrelated = "hi";

Note that unrelated and writeln happen to be aligned, which is sufficient for the false positive.

Reported by @alvaradoo -- thanks!

The solution is to steal the logic from IncorrectIndentation that avoids AST nodes that report their locations oddly.

Reviewed by @jabraham17 -- thanks!

Testing

• start_test test/chplcheck.