[Sema] Fix PR38987: keep end location of a direct initializer list

If PerformConstructorInitialization of a direct initializer list constructor is
called while instantiating a template, it has brace locations in its BraceLoc
arguments but not in the Kind argument.

This reverts the hunk https://reviews.llvm.org/D41921#inline-468844.

Patch by Orivej Desh!

Differential Revision: https://reviews.llvm.org/D53231

llvm-svn: 347261