Node.shouldStoreDeep: restore accidentally removed return statement

Regression by a62d4e130d543c14c203fa12600d1ecfb0c9fc8c
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Build 1427: Fix an accidental change to the store policy that slipped through in 1425/1426 (it was fixed soon after but I didn't include the fix). Sorry folks. Next will be fully released soon and hopefully it will be a bit less chaotic then.
Fix shouldStoreDeep() always returning false except when there is no source. Yikes! Serious bug, thanks folk on FMS for picking it up. I should have seen it when I reviewed the code on release, sorry.
Build 28. Make it mandatory on January 31.
Merge commit 'build01428' into stable-1429