Changes on the name of inner lock variable.

Signed-off-by: Zakaria Talbi Lalmi <zakariatalbi@eprosima.com>

Author: ZakariaTalbi

src/cpp/fastdds/publisher/DataWriterImpl.cpp

@@ -452,7 +452,7 @@ ReturnCode_t DataWriterImpl::enable()
     }
 
     {
-        std::lock_guard<std::mutex> qos_lock(qos_mutex_);
+        std::lock_guard<std::mutex> writer_assign_lock(qos_mutex_);
         writer_ = BaseWriter::downcast(writer);
     }