patch 8.2.1246: Vim9: comment after assignment doesn't work

Problem:    Vim9: comment after assignment doesn't work.
Solution:   Skip over white space. (closes #6481)
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 4b569f9..31cb31e 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -5706,7 +5706,7 @@
 	    goto theend;
     }
 
-    ret = end;
+    ret = skipwhite(end);
 
 theend:
     vim_free(name);