Fixing a typo in the documented __builtin_convertvector example.
  "vf[0]" ==> "vs[0]"



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216935 91177308-0d34-0410-b5e6-96231b3b80d8
Don't allow lambdas to capture invalid decls during template instantiations.

Fixes PR20731.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216936 91177308-0d34-0410-b5e6-96231b3b80d8
Don't indent inside a namespace.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216937 91177308-0d34-0410-b5e6-96231b3b80d8