[PATCH] [Support] Windows - Refactor argument serialization logic when executing process in Program.inc [NFC]

[Rafael Ávila de Espíndola]

LGTM with a check.

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Comment at: lib/Support/Windows/Program.inc:207
@@ -218,1 +206,3 @@
   *p = 0;
+  return command;
+}
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Don't you need a std::move in here?

http://reviews.llvm.org/D5054