mm: vma_adjust: minor comment correction

The cases are three not two.

Link: http://lkml.kernel.org/r/1474492522-2261-3-git-send-email-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Jan Vorlicek <janvorli@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/mmap.c

@@ -667,7 +667,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
 			/*
 			 * vma expands, overlapping all the next, and
 			 * perhaps the one after too (mprotect case 6).
-			 * The only two other cases that gets here are
+			 * The only other cases that gets here are
 			 * case 1, case 7 and case 8.
 			 */
 			if (next == expand) {