Fix warnings

This patch fixes:

  clang/lib/Driver/ToolChains/OHOS.cpp:410:18: warning: unused
  variable ‘A’ [-Wunused-variable]

  clang-tools-extra/clangd/refactor/tweaks/AddUsing.cpp:293:15:
  warning: unused variable ‘II’ [-Wunused-variable]

  llvm/lib/ProfileData/RawMemProfReader.cpp:364:68: warning: suggest
  parentheses around ‘&&’ within ‘||’ [-Wparentheses]