1. Add tests which include brace initialization (details)
  2. [lld][ELF] Removing redundant cast. NFC. (details)
Commit 40cee381c1779256e039d66ea5d01ad7d344efb7 by steveire
Add tests which include brace initialization
The file was modifiedclang-tools-extra/test/clang-tidy/checkers/bugprone-unused-raii.cpp
Commit d49270b087e85191057925ce00c19378caeee5b2 by sbc
[lld][ELF] Removing redundant cast. NFC.

Also a couple of minor cleanups in merge-string.s:
- fix inconsistent use of tabs
- use `.p2align` rather than `.align` since `.p2align` works the
  same on all platforms (the meaning of align seems to differ
  between platforms according to `AlignmentIsInBytes`.

I noticed these potential cleanups while porting SHF_STRINGS support to

Differential Revision:
The file was modifiedlld/test/ELF/merge-string.s
The file was modifiedlld/ELF/InputSection.cpp