Check ints for the end of string before seperator

[b0d0nne11]

If an integer matcher is the final element of a Trie it interprets the null at the end of the string as a separator character and pushes it back onto the iterator. Then the iterator containing a single null character fails to match the rest of the Trie. The string matcher on the other hand checks for the end of the string first and then checks for a separator character. This PR makes the behavior of the integer matcher the same as the string matcher by checking for the end of string first.

[klizhentas]

Hey Brendan, please cover this use-case by tests