patch 8.2.0558: Vim9: dict code not covered by tests

Problem:    Vim9: dict code not covered by tests.
Solution:   Remove dead code, adjust test case.
diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index a965bdf..3e0ed4f 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -767,7 +767,7 @@
 
   call CheckDefFailure("let x = #{8: 8}", 'E1014:')
   call CheckDefFailure("let x = #{xxx}", 'E720:')
-  call CheckDefFailure("let x = #{xxx: 1", 'E723:')
+  call CheckDefFailureMult(["let x = #{xxx: 1", "let y = 2"], 'E722:')
   call CheckDefFailure("let x = #{xxx: 1,", 'E723:')
   call CheckDefFailure("let x = {'a': xxx}", 'E1001:')
   call CheckDefFailure("let x = {xxx: 8}", 'E1001:')
diff --git a/src/version.c b/src/version.c
index f1e274b..eeec3e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    558,
+/**/
     557,
 /**/
     556,
diff --git a/src/vim9compile.c b/src/vim9compile.c
index cf91d3b..f2f7cc3 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2788,11 +2788,6 @@
 	*arg = skipwhite(*arg + 1);
     }
 
-    if (**arg != '}')
-    {
-	semsg(_(e_missing_dict_end), *arg);
-	goto failret;
-    }
     *arg = *arg + 1;
 
     // Allow for following comment, after at least one space.