[style] fix indent
fix Issue 12334 - Cannot access frame pointer of nested class from inside lambda
fix Issue 12350 - Assigning __traits(getAttributes) to variable crashes DMD
fix Issue 12352 - Consistently stop encoding return type of parent functions

Remove hack for Voldemort Type mangling
Merge pull request #3371 from 9rnsr/fix12334

Issue 12334 - Cannot access frame pointer of nested class from inside lambda
Merge pull request #3377 from 9rnsr/fix12352

Issue 12352 - Consistently stop encoding return type of parent functions
Merge pull request #3376 from 9rnsr/fix12350

Issue 12350 - Assigning __traits(getAttributes) to variable crashes DMD