patch 8.2.1889: Vim9: errornous error for missing white space after {}

Problem:    Vim9: errornous error for missing white space after {}.
Solution:   Don't skip over white space after {}. (issue #7167)
diff --git a/src/dict.c b/src/dict.c
index 503f5a5..8d07644 100644
--- a/src/dict.c
+++ b/src/dict.c
@@ -950,7 +950,7 @@
 	return FAIL;
     }
 
-    *arg = skipwhite(*arg + 1);
+    *arg = *arg + 1;
     if (evaluate)
 	rettv_dict_set(rettv, d);