all: cosmetic cleanups

src/util/xspan_impl.h

@@ -204,8 +204,6 @@ struct XSpanInternalDummyArg {
 #define XSpanInternalDummyArgInit (XSPAN_NS(XSpanInternalDummyArg)(0, nullptr))
 #endif
 
-XSPAN_NAMESPACE_END
-
 // poison a pointer: point to a non-null invalid address
 // - resulting pointer should crash on dereference
 // - this should be efficient (so no mmap() guard page etc.)
@@ -216,6 +214,8 @@ static forceinline void *XSPAN_GET_POISON_VOID_PTR() {
     return (void *) 251;
 }
 
+XSPAN_NAMESPACE_END
+
 #ifndef XSPAN_DELETED_FUNCTION
 #define XSPAN_DELETED_FUNCTION = delete
 #endif