[analyzer] Fix a bug in IdenticalExprChecker concerning while loops.

Somehow both Daniel and I missed the fact that while loops are only identical
if they have identical bodies.

Patch by Daniel Fahlgren!

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@201829 91177308-0d34-0410-b5e6-96231b3b80d8
Fix an assertion failure when invoking dsymutil.

There is no bound architecture for the dsymutil action in the driver. Trying
to check various properties of the target will cause an assertion failure
because the target doesn't get initialized without a bound architecture.
<rdar://problem/16111555>

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@201830 91177308-0d34-0410-b5e6-96231b3b80d8