libstdc++: Use constant for name of tzdata file

There's a string_view with this filename, which should have been used
instead of a string literal.

libstdc++-v3/ChangeLog:

	* src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
	string literal.

diff --git a/libstdc++-v3/src/c++20/tzdb.cc b/libstdc++-v3/src/c++20/tzdb.cc
index c956e86..2e7e173 100644 (file)
--- a/libstdc++-v3/src/c++20/tzdb.cc
+++ b/libstdc++-v3/src/c++20/tzdb.cc
@@ -1106,7 +1106,7 @@ namespace std::chrono
 
       tzdata_stream() : istream(nullptr)
       {
-       if (string path = zoneinfo_file("/tzdata.zi"); !path.empty())
+       if (string path = zoneinfo_file(tzdata_file); !path.empty())
        {
          filebuf fbuf;
          if (fbuf.open(path, std::ios::in))