patch 8.1.0004: test for :compiler command sometimes fails

Problem:    Test for :compiler command sometimes fails.
Solution:   Be less strict about the error message. (Dominique Pelle)

src/testdir/test_compiler.vim

@@ -19,9 +19,8 @@ func Test_compiler()
   w!
   call feedkeys(":make\<CR>\<CR>", 'tx')
   let a=execute('clist')
-  call assert_equal("\n 1 Xfoo.pl:3: Global symbol \"\$foo\" "
-  \ .               "requires explicit package name "
-  \ .               "(did you forget to declare \"my $foo\"?)", a)
+  call assert_match("\n 1 Xfoo.pl:3: Global symbol \"\$foo\" "
+  \ .               "requires explicit package name", a)
 
   call delete('Xfoo.pl')
   bw!

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4,
 /**/
     3,
 /**/