AreArgumentsNarrowedBase: Correct logic for narrowing connect() casts

The prior test deemed there to be narrowing if source and destination
integral-or-enum types didn't have the same signedness; but all values
of an unsigned source type can be represented in a larger signed
destination type, so there is no narrowing in this case.
Updated QObject test-case to match.

Change-Id: I517a5997adcad70e185d7469a8d26788e463cb75
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>

0 files changed, 0 insertions, 0 deletions