Add missing include

ldionne · ldionne · commit ccb5e32848fe · 2024-10-30T12:41:06.000-04:00
diff --git a/libcxx/src/support/win32/locale_win32.cpp b/libcxx/src/support/win32/locale_win32.cpp
@@ -10,6 +10,7 @@
 #include <locale>
 #include <memory>
 #include <type_traits>
+#include <cstdio>
 
 #include <__locale_dir/locale_guard.h>
 
