[gcc r17-501] libstdc++: rebuild configure

[Alexandre Oliva]

https://gcc.gnu.org/g:502d5813d8301e67445992c58ff0e3e9b5335a9f

commit r17-501-g502d5813d8301e67445992c58ff0e3e9b5335a9f
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Wed May 13 12:50:34 2026 -0300

    libstdc++: rebuild configure
    
    An earlier configury patch made originally in gcc-15, where no line
    number changes came up during configure rebuild, needed an explicit
    rebuild after porting to trunk.
    
    
    for  libstdc++-v3/ChangeLog
    
            * configure: Rebuild.

Diff:
---
 libstdc++-v3/configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 6e5e424b9dbb..b51694ecdfbe 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -54147,7 +54147,7 @@ $as_echo "$glibcxx_cv_libbacktrace_atomics" >&6; }
     CXXFLAGS='-O0 -S'
 
     cat > conftest.$ac_ext << EOF
-#line 54148 "configure"
+#line 54150 "configure"
 #include <stddef.h>
 int main()
 {