Auto merge of #13361 - Mylainos:issue-13350, r=Wafflespeanut

Report tidy error for space after (

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Add report in tidy for code which have a space after the `(` like `some_function( argument)`

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #13350 (github issue number if applicable).

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- [X] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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1 files changed, 1 insertions, 0 deletions

diff --git a/python/tidy/servo_tidy/tidy.py b/python/tidy/servo_tidy/tidy.py
index 081352f8a43..4b02f9dbf07 100644
--- a/python/tidy/servo_tidy/tidy.py
+++ b/python/tidy/servo_tidy/tidy.py
@@ -483,6 +483,7 @@ def check_rust(file_name, lines):
             (r"\{[A-Za-z0-9_]+\};", "use statement contains braces for single import",
                 lambda match, line: line.startswith('use ')),
             (r"^\s*else {", "else braces should be on the same line", no_filter),
+            (r"[^$ ]\([ \t]", "extra space after (", no_filter),
         ]
 
         for pattern, message, filter_func in regex_rules: