Don't kill the declarations if the translation unit doesn't own them  (specifically, for TranslationUnits created from SerializationTest.cpp).   Fixes a double-free bug in the serialization tests.
Don't kill the declarations if the translation unit doesn't own them 
(specifically, for TranslationUnits created from SerializationTest.cpp).  
Fixes a double-free bug in the serialization tests.



git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@51362 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang