[lldb] Fix a warning

This patch fixes:

  lldb/tools/lldb-dap/Handler/StepInTargetsRequestHandler.cpp:89:2:
  error: extra ';' outside of a function is incompatible with C++98
  [-Werror,-Wc++98-compat-extra-semi]

lldb/tools/lldb-dap/Handler/StepInTargetsRequestHandler.cpp

@@ -86,6 +86,6 @@ StepInTargetsRequestHandler::Run(const StepInTargetsArguments &args) const {
     }
   }
   return body;
-};
+}
 
 } // namespace lldb_dap