Tests: (src) Normalization with no args

Closes #293.  Thanks to Akira Komamura (@akirak) for reporting.

org-ql.info

@@ -1049,7 +1049,8 @@ File: README.info,  Node: 07-pre,  Next: 063,  Up: Changelog
 
    *Fixed*
    • Predicate ‘src’’s matching of begin/end block lines, normalization
-     of arguments, and handling in non-sexp queries.
+     of arguments, and handling in non-sexp queries.  (Thanks to Akira
+     Komamura (https://github.com/akirak) for reporting.)
    • Predicate ‘src’’s behavior with various arguments.
 
    *Internal*
@@ -1726,35 +1727,35 @@ Node: Links37140
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