Correctly check the definition for length field

controllers/player.py

@@ -96,7 +96,7 @@ def submit():
             if (not isinstance(inputs[key], str)) or (keytest != key):
                 return(FAIL(CODE_MISSING))
 
-            if input_definitions[key]["length"] and len(inputs[key]) > input_definitions[key]["length"]:
+            if "length" in input_definitions[key] and len(inputs[key]) > input_definitions[key]["length"]:
                 return(FAIL(CODE_MISSING))
 
             inputs[key] = ''.join(c for c in inputs[key] if (c.isalnum() or c == " "))