[2.25 COMMITTED] __libc_dynarray_emplace_enlarge: Add missing else

[Florian Weimer]

Before, arrays of small elements received a starting allocation size of
8, not 16.

(cherry picked from commit ab5ac271e6210fa0af11cf3ca525ce573bc47c48)

2017-09-06  Florian Weimer  <fweimer@redhat.com>

	* malloc/dynarray_emplace_enlarge.c
	(__libc_dynarray_emplace_enlarge): Add missing else.

diff --git a/malloc/dynarray_emplace_enlarge.c b/malloc/dynarray_emplace_enlarge.c
index 0fb032765c..a15245f4cb 100644
--- a/malloc/dynarray_emplace_enlarge.c
+++ b/malloc/dynarray_emplace_enlarge.c
@@ -33,7 +33,7 @@ __libc_dynarray_emplace_enlarge (struct dynarray_header *list,
          size.  */
       if (element_size < 4)
         new_allocated = 16;
-      if (element_size < 8)
+      else if (element_size < 8)
         new_allocated = 8;
       else
         new_allocated = 4;