patch 8.1.0191: Perl test fails in 24 line terminal

Problem:    Perl test fails in 24 line terminal.
Solution:   Create fewer windows.
diff --git a/src/testdir/test_perl.vim b/src/testdir/test_perl.vim
index 4934780..0528814 100644
--- a/src/testdir/test_perl.vim
+++ b/src/testdir/test_perl.vim
@@ -221,7 +221,7 @@
 
 " Run first to get a clean namespace
 func Test_000_SvREFCNT()
-  for i in range(10)
+  for i in range(8)
     exec 'new X'.i
   endfor
   new t
diff --git a/src/version.c b/src/version.c
index ffc651d..670c2e3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    191,
+/**/
     190,
 /**/
     189,