[committed] libstdc++: Mark new istream::ignore overload always_inline

[Jonathan Wakely]

This means we don't need to add the new member to the explicit
instantiation definition.

libstdc++-v3/ChangeLog:

        * include/std/istream (istream::ignore(streamsize, char)): Add
        always_inline attribute.
---

Tested x86_64-linux. Pushed to trunk.

 libstdc++-v3/include/std/istream | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libstdc++-v3/include/std/istream b/libstdc++-v3/include/std/istream
index 285c41cf02ba..ea232a71f5a8 100644
--- a/libstdc++-v3/include/std/istream
+++ b/libstdc++-v3/include/std/istream
@@ -556,6 +556,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       ignore();
 
 #if __cplusplus > 202302L
+      [[__gnu__::__always_inline__]]
       __istream_type&
       ignore(streamsize __n, char __delim) requires same_as<_CharT, char>
       { return ignore(__n, traits_type::to_int_type(__delim)); }
-- 
2.51.1