patch 8.1.0055: complete test has wrong order of arguments

Problem:    Complete test has wrong order of arguments. Wrong type for
            sentinel variable.
Solution:   Swap arguments, use VAR_UNKNOWN. (Ozaki Kiichi)

Author: brammool

src/mbyte.c

@@ -4799,7 +4799,7 @@ call_imactivatefunc(int active)
 
     argv[0].v_type = VAR_NUMBER;
     argv[0].vval.v_number = active ? 1 : 0;
-    argv[1].v_type = VAR_NUMBER;
+    argv[1].v_type = VAR_UNKNOWN;
     (void)call_func_retnr(p_imaf, 1, argv, FALSE);
 }
 

src/testdir/test_ins_complete.vim

@@ -126,15 +126,15 @@ func Test_completefunc_args()
 
   set completefunc=CompleteFunc
   call feedkeys("i\<C-X>\<C-U>\<Esc>", 'x')
-  call assert_equal(s:args[0], [1, 1])
-  call assert_equal(s:args[1][0], 0)
+  call assert_equal([1, 1], s:args[0])
+  call assert_equal(0, s:args[1][0])
   set completefunc=
 
   let s:args = []
   set omnifunc=CompleteFunc
   call feedkeys("i\<C-X>\<C-O>\<Esc>", 'x')
-  call assert_equal(s:args[0], [1, 1])
-  call assert_equal(s:args[1][0], 0)
+  call assert_equal([1, 1], s:args[0])
+  call assert_equal(0, s:args[1][0])
   set omnifunc=
 
   bwipe!

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    55,
 /**/
     54,
 /**/