patch 8.1.1683: dictionary with string keys is longer than needed
Problem: Dictionary with string keys is longer than needed.
Solution: Use *{key: val} for literaly keys.
diff --git a/src/testdir/dumps/Test_popupwin_07.dump b/src/testdir/dumps/Test_popupwin_07.dump
index 5c44ad3..28c13cb 100644
--- a/src/testdir/dumps/Test_popupwin_07.dump
+++ b/src/testdir/dumps/Test_popupwin_07.dump
@@ -6,5 +6,5 @@
|~| @73
|~| @52|o+0#0000001#ffd7ff255|t|h|e|r| |t|a|b| @11
|~+0#4040ff13#ffffff0| @52|a+0#0000001#ffd7ff255| |c+0#ff404010&|o|m@1|e|n|t| +0#0000001&|l|i|n|e| @6
-|:+0#0000000#ffffff0|c|a|l@1| |p|o|p|u|p|_|m|o|v|e|(|p|o|p|u|p|w|i|n|,| |{|'|l|i|n|e|'|:| |7|,| |'|c|o|l|'|:| |5@1|}|)| @3|t+0#0000001#ffd7ff255|h|i|s| |l|i|n|e| |w|i|l@1| |n|o|t| |f|i
+|:+0#0000000#ffffff0|c|a|l@1| |p|o|p|u|p|_|m|o|v|e|(|p|o|p|u|p|w|i|n|,| |*|{|l|i|n|e|:| |7|,| |c|o|l|:| |5@1|}|)| @6|t+0#0000001#ffd7ff255|h|i|s| |l|i|n|e| |w|i|l@1| |n|o|t| |f|i
| +0#0000000#ffffff0@53|t+0#0000001#ffd7ff255| |h|e|r|e| @14