tree 3cab15308c4004e865b8830861d94eca0e84c465
parent 222ae505623476f08fd5db3544d7a9e6a0b50472
author David 'Digit' Turner <digit@google.com> 1587479831 +0200
committer Commit Bot <commit-bot@chromium.org> 1587491921 +0000

Remove minor compiler warning

Replace 'const auto' with 'const auto&' to remove a compiler
warning when compiling src/gn/rust_project_writer.cc with a recent
Clang toolchain (e.g. the prebuilt CIPD package from the Fuchsia
project), which looks like:

../src/gn/rust_project_writer.cc:305:19: warning: loop variable 'cfg'
creates a copy from type 'const
std::__2::tuple<std::__2::basic_string<char,
std::__2::char_traits<char>, std::__2::allocator<char> >,
std::__2::basic_string<char, std::__2::char_traits<char>,
std::__2::allocator<char> > >' [-Wrange-loop-construct]
  for (const auto cfg : kvs) {
                    ^

../src/gn/rust_project_writer.cc:305:8: note: use
		    reference type 'const
		    std::__2::tuple<std::__2::basic_string<char,
		    std::__2::char_traits<char>,
		    std::__2::allocator<char> >,
		    std::__2::basic_string<char,
		    std::__2::char_traits<char>,
		    std::__2::allocator<char> > > &' to prevent copying
		      for (const auto cfg : kvs) {
		             ^~~~~~~~~~~~~~~~
			                       &

Change-Id: Ia325fec7bd2303e8a762bfd7bf38397f3b1eb522
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/8120
Reviewed-by: Benjamin Brittain <bwb@google.com>
Reviewed-by: Petr Hosek <phosek@google.com>
Commit-Queue: Petr Hosek <phosek@google.com>