Pass a && to getLazyBitcodeModule.

This forces callers to use std::move when calling it. It is somewhat odd to have
code with std::move that doesn't always move, but it is also odd to have code
without std::move that sometimes moves.

llvm-svn: 217049

llvm/lib/Bitcode/Reader/BitReader.cpp

@@ -54,7 +54,7 @@ LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
   std::unique_ptr<MemoryBuffer> Owner(unwrap(MemBuf));
 
   ErrorOr<Module *> ModuleOrErr =
-      getLazyBitcodeModule(Owner, *unwrap(ContextRef));
+      getLazyBitcodeModule(std::move(Owner), *unwrap(ContextRef));
   Owner.release();
 
   if (std::error_code EC = ModuleOrErr.getError()) {