Switch from CreateTypeSourceInfo, which allocates
uninitialized memory, to getTrivialTypeSourceInfo,
which initializes its memory, when creating trivial
TypeSourceInfos.

<rdar://problem/13332253>


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@176899 91177308-0d34-0410-b5e6-96231b3b80d8