Replace IOError with OSError (#16715)
diff --git a/Lib/imghdr.py b/Lib/imghdr.py
index 6ee45da..0cba063 100644
--- a/Lib/imghdr.py
+++ b/Lib/imghdr.py
@@ -149,7 +149,7 @@
             sys.stdout.flush()
             try:
                 print(what(filename))
-            except IOError:
+            except OSError:
                 print('*** not found ***')
 
 if __name__ == '__main__':