[PATCH] dlfcn: Move RTLD_DEFAULT/RTLD_NEXT outside __USE_GNU

[Fangrui Song <maskray@google.com>]

RTLD_DEFAULT and RTLD_NEXT appear in IEEE Std 1003.1-2004.  (RTLD_NEXT
even appears in the 1997 SUS version 2.)  Many systems (e.g. FreeBSD, musl)
just define the two macros unconditionally.

Let's do the same, as if the state before
commit 70b2845f71c1fb6bd5ec3ef325974b6a90cdb45c.
---
 dlfcn/dlfcn.h | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/dlfcn/dlfcn.h b/dlfcn/dlfcn.h
index a3af6051d4..6be06241d1 100644
--- a/dlfcn/dlfcn.h
+++ b/dlfcn/dlfcn.h
@@ -30,6 +30,14 @@
 #ifdef __USE_GNU
 #include <bits/dl_find_object.h>
 
+/* Type for namespace indices.  */
+typedef long int Lmid_t;
+
+/* Special namespace ID values.  */
+# define LM_ID_BASE	0	/* Initial namespace.  */
+# define LM_ID_NEWLM	-1	/* For dlmopen: request new namespace.  */
+#endif
+
 /* If the first argument of `dlsym' or `dlvsym' is set to RTLD_NEXT
    the run-time address of the symbol called NAME in the next shared
    object is returned.  The "next" relation is defined by the order
@@ -41,16 +49,6 @@
    is returned.  */
 # define RTLD_DEFAULT	((void *) 0)
 
-
-/* Type for namespace indices.  */
-typedef long int Lmid_t;
-
-/* Special namespace ID values.  */
-# define LM_ID_BASE	0	/* Initial namespace.  */
-# define LM_ID_NEWLM	-1	/* For dlmopen: request new namespace.  */
-#endif
-
-
 __BEGIN_DECLS
 
 /* Open the shared object FILE and map it in; return a handle that can be
-- 
2.36.1.124.g0e6072fb45-goog