Fix NITs in comments and CHANGES for DEVRANDOM seeded check.

Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/9734)

(cherry picked from commit 46a9cc9451213039fd53f62733b2ccd04e853bb2)

CHANGES

@@ -9,6 +9,15 @@
 
  Changes between 1.1.1c and 1.1.1d [xx XXX xxxx]
 
+  *) Early start up entropy quality from the DEVRANDOM seed source has been
+     improved for older Linux systems.  The RAND subsystem will wait for
+     /dev/random to be producing output before seeding from /dev/urandom.
+     The seeded state is stored for future library initialisations using
+     a system global shared memory segment.  The shared memory identifier
+     can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
+     the desired value.  The default identifier is 114.
+     [Paul Dale]
+
    *) Early start up entropy quality from the DEVRANDOM seed source has been
       improved for older Linux systems.  The RAND subsystem will wait for
       /dev/random to be producing output before seeding from /dev/urandom.

crypto/rand/rand_unix.c

@@ -388,7 +388,7 @@ static int wait_random_seeded(void)
     fd_set fds;
 
     if (!seeded) {
-        /* See if anthing has created the global seeded indication */
+        /* See if anything has created the global seeded indication */
         if ((shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1, 0)) == -1) {
             /*
              * Check the kernel's version and fail if it is too recent.
@@ -422,7 +422,7 @@ static int wait_random_seeded(void)
                 close(fd);
                 if (r == 1) {
                     seeded = 1;
-                    /* Craete the shared memory indicator */
+                    /* Create the shared memory indicator */
                     shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1,
                                     IPC_CREAT | S_IRUSR | S_IRGRP | S_IROTH);
                 }