MFC r313356:

Fix typos in comments (returing -> returning)

sys/netpfil/ipfw/dn_heap.h

@@ -85,7 +85,7 @@ enum {
  * HEAP_TOP() returns a pointer to the top element of the heap,
  *	but makes no checks on its existence (XXX should we change ?)
  *
- * heap_extract() removes the entry at the top, returing the pointer.
+ * heap_extract() removes the entry at the top, returning the pointer.
  *	(the key should have been read before).
  *
  * heap_scan() invokes a callback on each entry of the heap.

usr.sbin/syslogd/syslogd.c

@@ -2277,7 +2277,7 @@ markit(void)
 
 /*
  * fork off and become a daemon, but wait for the child to come online
- * before returing to the parent, or we get disk thrashing at boot etc.
+ * before returning to the parent, or we get disk thrashing at boot etc.
  * Set a timer so we don't hang forever if it wedges.
  */
 static int