patch 8.1.0005: test for :compiler command fails on MS-Windows

Problem:    Test for :compiler command fails on MS-Windows.
Solution:   Ignore difference in path.
diff --git a/src/testdir/test_compiler.vim b/src/testdir/test_compiler.vim
index 902276d..29d02b2 100644
--- a/src/testdir/test_compiler.vim
+++ b/src/testdir/test_compiler.vim
@@ -28,9 +28,9 @@
 
 func Test_compiler_without_arg()
   let a=split(execute('compiler'))
-  call assert_equal($VIMRUNTIME . '/compiler/ant.vim',   a[0])
-  call assert_equal($VIMRUNTIME . '/compiler/bcc.vim',   a[1])
-  call assert_equal($VIMRUNTIME . '/compiler/xmlwf.vim', a[-1])
+  call assert_match('^.*runtime/compiler/ant.vim$',   a[0])
+  call assert_match('^.*runtime/compiler/bcc.vim$',   a[1])
+  call assert_match('^.*runtime/compiler/xmlwf.vim$', a[-1])
 endfunc
 
 func Test_compiler_completion()