createToken.py: Fix typo output_filename => input_filename

output_filename is not defined in else branch. Most likely author
wanted to use input_filename instead

Author: landgraf

kuksa_certificates/jwt/createToken.py

@@ -19,10 +19,8 @@ def createJWTToken(input_filename, priv_key):
 
     encoded = jwt.encode(payload, priv_key, algorithm="RS256")
 
-    if input_filename.endswith(".json"):
-        output_filename = input_filename[:-5] + ".token"
-    else:
-        output_filename = output_filename + ".token"
+    output_filename = input_filename[:-5] if input_filename.endswith(".json") else input_filename
+    output_filename += ".token"
 
     print("Writing signed access token to {}".format(output_filename))
     with open(output_filename, "w") as output: