[libc++][NFC] Fix include guard for decay_copy.h and remove underscores from the header
We don't use double underscores for private header names when they are
in a subdirectory with double underscores already.
Differential Revision: https://reviews.llvm.org/D108820
NOKEYCHECK=True
GitOrigin-RevId: c8b14c03ec741f672f0ca1370ecdd9415d7eca7c
diff --git a/include/module.modulemap b/include/module.modulemap
index b6a39a0..783f212 100644
--- a/include/module.modulemap
+++ b/include/module.modulemap
@@ -789,9 +789,9 @@
export *
module __utility {
- module __decay_copy { private header "__utility/__decay_copy.h" }
module as_const { private header "__utility/as_const.h" }
module cmp { private header "__utility/cmp.h" }
+ module decay_copy { private header "__utility/decay_copy.h" }
module declval { private header "__utility/declval.h" }
module exchange { private header "__utility/exchange.h" }
module forward { private header "__utility/forward.h" }