Segfault on non-supported length of path function

[ray6080]

This can be reproduced from the following example.

CREATE NODE TABLE N1(name STRING, PRIMARY KEY(name));
CREATE NODE TABLE N2(name STRING, PRIMARY KEY(name));
CREATE REL TABLE Rel1(FROM N1 TO N2);
CREATE REL TABLE Rel2(FROM N1 TO N2);
CREATE (n1:N1 {name: "n1a"}), (n2:N2 {name: "n2a"}), (n1)-[:Rel1]->(n2);

MATCH p = (n1:N1)-[:Rel1]->() return length(p); // Segmentation fault here

Debugged a bit, the problem resides in ExpressionBinder::bindRecursiveJoinLengthFunction, which doesn't perform correct casting.