[lld][WebAssembly] Use C++17 nested namespace syntax in most places. NFC
Like D131405, but for wasm-ld.
Differential Revision: https://reviews.llvm.org/D145399
diff --git a/lld/wasm/Config.h b/lld/wasm/Config.h
index 0161489..62cc14d 100644
--- a/lld/wasm/Config.h
+++ b/lld/wasm/Config.h
@@ -20,8 +20,7 @@
enum Level : int;
} // namespace llvm::CodeGenOpt
-namespace lld {
-namespace wasm {
+namespace lld::wasm {
class InputFile;
class Symbol;
@@ -125,7 +124,6 @@
// The only instance of Configuration struct.
extern Configuration *config;
-} // namespace wasm
-} // namespace lld
+} // namespace lld::wasm
#endif
