[lldb] [Host/SerialPort] Fix build with GCC 7

diff --git a/lldb/source/Host/common/File.cpp b/lldb/source/Host/common/File.cpp
index 5ad5ae6..27a47ca 100644 (file)
--- a/lldb/source/Host/common/File.cpp
+++ b/lldb/source/Host/common/File.cpp
@@ -837,7 +837,7 @@ SerialPort::Create(int fd, OpenOptions options, Options serial_options,
       return std::move(error);
   }
 
-  return out;
+  return std::move(out);
 }
 
 SerialPort::SerialPort(int fd, OpenOptions options,