patch 8.1.1482: no test for wincol() depending on the 'number' option

Problem:    No test for wincol() depending on the 'number' option.
Solution:   Add a couple of tests. (Christian Brabandt, closes #4500)

src/testdir/test_gui.vim

@@ -694,12 +694,22 @@ func Test_scrollbars()
   call setline(11, repeat('x', 150))
   redraw
   call assert_equal(1, wincol())
+  set number
+  redraw
+  call assert_equal(5, wincol())
+  set nonumber
+  redraw
   call assert_equal(1, col('.'))
 
   " scroll to character 11, cursor is moved
   call test_scrollbar('hor', 10, 0)
   redraw
   call assert_equal(1, wincol())
+  set number
+  redraw
+  call assert_equal(5, wincol())
+  set nonumber
+  redraw
   call assert_equal(11, col('.'))
 
   set guioptions&

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1482,
 /**/
     1481,
 /**/