Declare missing randomlock

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7936 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils.c

@@ -884,6 +884,9 @@ int getloadavg(double *list, int nelem)
 /* glibc puts a lock inside random(3), so that the results are thread-safe.
  * BSD libc (and others) do not. */
 #ifndef linux
+
+AST_MUTEX_DEFINE_STATIC(randomlock);
+
 long int ast_random(void)
 {
 	long int res;