patch 8.2.0719: Vim9: more expressions can be evaluated at compile time

Problem:    Vim9: more expressions can be evaluated at compile time
Solution:   Recognize has('name').
diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index 3ce8b1e..86d1715 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -429,7 +429,7 @@
 
   call CheckDefFailure(["let x = 1 == '2'"], 'Cannot compare number with string')
   call CheckDefFailure(["let x = '1' == 2"], 'Cannot compare string with number')
-  call CheckDefFailure(["let x = 1 == RetVoid()"], 'Cannot use void value')
+  call CheckDefFailure(["let x = 1 == RetVoid()"], 'Cannot compare number with void')
   call CheckDefFailure(["let x = RetVoid() == 1"], 'Cannot compare void with number')
 
   call CheckDefFailure(["let x = true > false"], 'Cannot compare bool with bool')