Fixed bug that no 'diff' command was being generated for assertStringCorrect.
Fixed bug that no 'diff' command was being generated for assertStringCorrect.

There's no 'actual file', but that shouldn't stop it from reconstructing the
appropriate file for diffing, just like it does in the assertFileCorrect case.

tdda/tdda,tdda/tdda,tdda/tdda,tdda/tdda