[gcc r15-9383] libstdc++: Add fast_float patch to LOCAL_PATCHES

[Jonathan Wakely]

https://gcc.gnu.org/g:44478b69d70ff0095a1fd06392e380827de4688a

commit r15-9383-g44478b69d70ff0095a1fd06392e380827de4688a
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Apr 11 14:21:35 2025 +0100

    libstdc++: Add fast_float patch to LOCAL_PATCHES
    
    libstdc++-v3/ChangeLog:
    
            * src/c++17/fast_float/LOCAL_PATCHES: Update.

Diff:
---
 libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES b/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES
index 71495d6728bf..28d86fd4d70d 100644
--- a/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES
+++ b/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES
@@ -1,2 +1,3 @@
 r12-6647
 r12-6648
+r15-9382