resolv.c,time.c,_atexit.c: hide 3 locks

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/inet/resolv.c

@@ -405,7 +405,7 @@ typedef union sockaddr46_t {
 } sockaddr46_t;
 
 
-__UCLIBC_MUTEX_EXTERN(__resolv_lock);
+__UCLIBC_MUTEX_EXTERN(__resolv_lock) attribute_hidden;
 
 /* Protected by __resolv_lock */
 extern void (*__res_sync)(void) attribute_hidden;

libc/misc/time/time.c

@@ -208,7 +208,7 @@ typedef struct {
 	char tzname[TZNAME_MAX+1];
 } rule_struct;
 
-__UCLIBC_MUTEX_EXTERN(_time_tzlock);
+__UCLIBC_MUTEX_EXTERN(_time_tzlock) attribute_hidden;
 
 extern rule_struct _time_tzinfo[2] attribute_hidden;
 

libc/stdlib/_atexit.c

@@ -44,7 +44,7 @@
 #include <atomic.h>
 
 #include <bits/uClibc_mutex.h>
-__UCLIBC_MUTEX_EXTERN(__atexit_lock);
+__UCLIBC_MUTEX_EXTERN(__atexit_lock) attribute_hidden;