[PATCH] Fix some problems with sized deletion in libc++

[Marshall Clow]

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Comment at: include/new:147
@@ -145,2 +146,3 @@
+#endif
 
 _LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz)
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This change (and the one below) are two simple changes that the diff obscures:
1) Move the two variants that have a size_t param together.
2) Wrap them in an ifdef.

http://reviews.llvm.org/D7699

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