msvcrt/tests: remove unused assignments (LLVM/Clang)

[Reece Dunn]

2011/7/26 Frédéric Delanoy <frederic.delanoy at gmail.com>:
> On Tue, Jul 26, 2011 at 03:48, Austin English <austinenglish at gmail.com> wrote:
>> --
>> -Austin
>
> Already sent similar patches. Not sure AJ  likes those.

These should test what is returned by fgetc, not ignore its return value. E.g.:

-    c= fgetc(fp);
+   ok((c = fgetc(fp)) == '\r', "fgetc after rewind failed, expected
'\\r', got '%c'\n", c);

- Reece