Modify MIExpressionsTest.testUpdateOfPointer so that it only uses
synchronous methods. There is no change of behavior intended, the test
should do pretty much the same thing as before, but should be a bit more
readable.
One difference is that we don't need to re-create the
IExpressionDMContext objects when we want to re-evaluate the
expressions (after stepping the 2nd time). We can just call
getExpressionValue on the again, which will trigger a -var-update.
Change-Id: I09bb914b097888bf3146df0096eb9d824441ffa8
Signed-off-by: Simon Marchi <simon.marchi@polymtl.ca>