REFACTOR: Have PushLambdaScope return the LambdaScopeInfo that it creates.

No Functionality change.

This refactoring avoids having to call getCurLambda right after PushLambdaScope, to obtain the LambdaScopeInfo that was created during the call to PushLambdaScope. 

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194438 91177308-0d34-0410-b5e6-96231b3b80d8
COSMETIC: Right justify an asterix in the previous refactoring.

Hopefully Richard won't notice this terrible egregiocity - clearly the work of a malevolent poltergeist - fixed now ;)

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194439 91177308-0d34-0410-b5e6-96231b3b80d8