Auto merge of #27006 - saschanaz:single-init, r=jdm

Initialize colorama only once

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Repeated initialization wraps colorama inside colorama, making the loop O(n^2) and causes stack overflow when running `mach test-tidy --all`.

---
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- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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

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python/tidy/servo_tidy/tidy.py

@@ -1140,13 +1140,12 @@ def scan(only_changed_files=False, progress=True, stylo=False, no_wpt=False):
                              file_errors, dep_license_errors)
 
     error = None
+    colorama.init()
     for error in errors:
-        colorama.init()
         print("\r\033[94m{}\033[0m:\033[93m{}\033[0m: \033[91m{}\033[0m".format(*error))
 
     print()
     if error is None:
-        colorama.init()
         print("\033[92mtidy reported no errors.\033[0m")
 
     return int(error is not None)