patch 8.2.0180: test for wrapmargin fails if terminal is not 80 columns

Problem:    Test for wrapmargin fails if terminal is not 80 columns.
Solution:   Vertical split the window. (Ken Takata, closes #5554)

src/testdir/test_textformat.vim

@@ -425,12 +425,13 @@ func Test_format_align()
   enew!
 
   " align text with 'wrapmargin'
+  50vnew
   call setline(1, ['Vim'])
-  set textwidth=0
-  set wrapmargin=60
+  setl textwidth=0
+  setl wrapmargin=30
   right
   call assert_equal("\t\t Vim", getline(1))
-  set wrapmargin&
+  q!
 
   set tw&
 endfunc

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    180,
 /**/
     179,
 /**/