libzpool: don't export random_init()/random_fini()

Sponsored-by: https://despairlabs.com/sponsor/
Signed-off-by: Rob Norris <[email protected]>

Author: robn

include/sys/zfs_context.h

@@ -142,9 +142,6 @@ extern "C" {
 typedef off_t loff_t;
 #endif
 
-extern void random_init(void);
-extern void random_fini(void);
-
 /*
  * Kernel modules
  */

lib/libzpool/kernel.c

@@ -777,14 +777,14 @@ const char *random_path = "/dev/random";
 const char *urandom_path = "/dev/urandom";
 static int random_fd = -1, urandom_fd = -1;
 
-void
+static void
 random_init(void)
 {
 	VERIFY((random_fd = open(random_path, O_RDONLY | O_CLOEXEC)) != -1);
 	VERIFY((urandom_fd = open(urandom_path, O_RDONLY | O_CLOEXEC)) != -1);
 }
 
-void
+static void
 random_fini(void)
 {
 	close(random_fd);