Comment fix.

Rev: nettle/yarrow256.c:1.2
Rev: src/unix_process.c:1.22

nettle/yarrow256.c

@@ -278,7 +278,7 @@ yarrow256_update(struct yarrow256_ctx *ctx,
 	   && (entropy > YARROW_MULTIPLIER * length) )
 	entropy = YARROW_MULTIPLIER * length;
 
-      /* FIXME: Calling a more sophisticated estimater should be done
+      /* FIXME: Calling a more sophisticated estimator could be done
        * here. */
 
       entropy += source->estimate[current];

src/unix_process.c

@@ -414,7 +414,7 @@ spawn_child(struct spawn_info *info, int sync,
    * signalling EOF on the pty (^D written to the master side mangled
    * into NUL on the reading side. Observed on linux-2.6.16. Not
    * solved; delaying the close a little using io_set_close_on_exec
-   * made no difference. */
+   * made no difference). */
 
   safe_close (sync);