edm::refToPtr now handles null Refs

[Dr15Jones]

Previous, edm::refToPtr would cause an exception to happen if it was passed a ‘null’ edm::Ref. This change now just returns a null edm::Ptr in such a case.

[Dr15Jones]

@jpavel @slava77 This will fix a problem seen on #1817

[cmsbuild]

A new Pull Request was created by @Dr15Jones (Chris Jones) for CMSSW_7_0_X.

edm::refToPtr now handles null Refs

It involves the following packages:

DataFormats/Common

@cmsbuild, @Degano, @Dr15Jones, @ktf, @nclopezo can you please review it and eventually sign? Thanks.
@wmtan this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
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@ktf you are the release manager for this.

[Dr15Jones]

+1

[slava77]

On 1/16/14, 9:10 PM, Chris Jones wrote:

@jpavel https://github.com/jpavel @slava77
https://github.com/slava77 This will fix a problem seen on #1817
#1817

Thanks a lot, Chris.

    --slava

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Vyacheslav (Slava) Krutelyov
TAMU: Physics Dept Texas A&M MS4242, College Station, TX 77843-4242
CERN: 42-R-027
AIM/Skype: siava16 googleTalk: slava77@gmail.com
(630) 291-5128 Cell (US) +41 76 275 7116 Cell (CERN)

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[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IBs unless changes or unless it breaks tests. @ktf can you please take care of it?