Fix typo.

[eugenefil]

Fix typo: the superinvocation interface is M_S, not M_super (which is a class name).

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[munificent]

@eernstg, thoughts?

[eernstg]

LGTM

[eernstg]

Good catch, @eugenefil!

An interface is a set of member signatures. Every interface type (including class types) has a uniquely determined interface, which means that there is no doubt what "the interface $M_{super}$" means, namely, the interface of the class whose name is denoted by the symbol $M_{super}$. We usually say "the interface of" a given class, and the interface usually doesn't have its own designator (but here we have explicitly named it as $M_S$). So it doesn't really say anything wrong, but it abuses the terminology slightly. $M_S$ is better.

[eernstg]

/gcbrun