fix some unneeded PLT references

libc/misc/internals/__uClibc_main.c

@@ -82,9 +82,12 @@ void internal_function _dl_aux_init (ElfW(auxv_t) *av);
 /*
  * Prototypes.
  */
-extern void weak_function _stdio_init(void) attribute_hidden;
 extern int *weak_const_function __errno_location(void);
+libc_hidden_proto(__errno_location)
 extern int *weak_const_function __h_errno_location(void);
+libc_hidden_proto(__h_errno_location)
+
+extern void weak_function _stdio_init(void) attribute_hidden;
 #ifdef __UCLIBC_HAS_LOCALE__
 extern void weak_function _locale_init(void) attribute_hidden;
 #endif

libc/stdio/_stdio.h

@@ -46,7 +46,7 @@ do {							\
 	__STDIO_THREADUNLOCK_OPENLIST_DEL;		\
 } while (0)
 
-extern void _stdio_openlist_dec_use(void);
+extern void _stdio_openlist_dec_use(void) attribute_hidden;
 
 #define __STDIO_OPENLIST_DEC_USE			\
 	_stdio_openlist_dec_use()

libc/stdio/fflush.c

@@ -27,7 +27,7 @@
 	(_stdio_user_locking != 2))
 
 #if defined(__UCLIBC_HAS_THREADS__) && defined(__STDIO_BUFFERS)
-void _stdio_openlist_dec_use(void)
+void attribute_hidden _stdio_openlist_dec_use(void)
 {
 	__STDIO_THREADLOCK_OPENLIST_DEL;
 	if ((_stdio_openlist_use_count == 1) && (_stdio_openlist_del_count > 0)) {

libc/sysdeps/linux/common/creat64.c

@@ -23,7 +23,8 @@
 #include <sys/types.h>
 
 extern __typeof(open64) __libc_open64;
-/* libc_hidden_proto(__libc_open64) */
+libc_hidden_proto(__libc_open64)
+
 extern __typeof(creat64) __libc_creat64;
 
 /* Create FILE with protections MODE.  */