Revert "Remove redundant "std::move"s in return statements"

The build failed with

  error: call to deleted constructor of 'llvm::Error'

errors.

This reverts commit 1c2241a7936bf85aa68aef94bd40c3ba77d8ddf2.
diff --git a/llvm/lib/TextAPI/ELF/TBEHandler.cpp b/llvm/lib/TextAPI/ELF/TBEHandler.cpp
index f1357e1..cb597d8 100644
--- a/llvm/lib/TextAPI/ELF/TBEHandler.cpp
+++ b/llvm/lib/TextAPI/ELF/TBEHandler.cpp
@@ -149,7 +149,7 @@
   if (std::error_code Err = YamlIn.error())
     return createStringError(Err, "YAML failed reading as TBE");
 
-  return Stub;
+  return std::move(Stub);
 }
 
 Error elfabi::writeTBEToOutputStream(raw_ostream &OS, const ELFStub &Stub) {