[MLton] VERY bad error message

[Henry Cejtin]

In the simple ML file

	val frogp = _address "frog": int ref;

(where I mistakenly used the type int ref instead of MLton.Pointer.t),
the compilation fails with the message:

	Type error: bad primapp

followed by a dump of not quite 14,000 lines of intermediate code, which
even includes some 0 bytes in it.

This all on MLton 20051202.