Add no-op ConvToStr(const std::string&)

diff --git a/include/convto.h b/include/convto.h
index 82f13c46dc8b592fc894f735e425e03757b229cb..eaf14f6dc549972faa951fe437b58123e78148bc 100644 (file)
--- a/include/convto.h
+++ b/include/convto.h
@@ -74,6 +74,11 @@ inline std::string ConvToStr(char in)
        return std::string(1, in);
 }
 
+inline const std::string& ConvToStr(const std::string& in)
+{
+       return in;
+}
+
 /** Template function to convert any input type to std::string
  */
 template <class T> inline std::string ConvToStr(const T& in)