Fix mypy error

dan-blanchard · dan-blanchard · commit fa4c1af39b73 · 2022-07-17T16:01:30.000-04:00
diff --git a/chardet/universaldetector.py b/chardet/universaldetector.py
@@ -329,7 +329,7 @@ def close(self) -> FinalResultDict:
                 # Rename legacy encodings with superset encodings if asked
                 if self.should_rename_legacy:
                     charset_name = self.LEGACY_MAP.get(
-                        charset_name.lower(), charset_name
+                        (charset_name or "").lower(), charset_name
                     )
                 self.result = {
                     "encoding": charset_name,

Original file line number	Diff line number	Diff line change
`@@ -329,7 +329,7 @@ def close(self) -> FinalResultDict:`
`329`	`329`	`# Rename legacy encodings with superset encodings if asked`
`330`	`330`	`if self.should_rename_legacy:`
`331`	`331`	`charset_name = self.LEGACY_MAP.get(`
`332`		`- charset_name.lower(), charset_name`
	`332`	`+ (charset_name or "").lower(), charset_name`
`333`	`333`	`)`
`334`	`334`	`self.result = {`
`335`	`335`	`"encoding": charset_name,`