fix namespace include in cmakelists for mlspp, backport of mls++ fix (#1331)

Author: braindigitalis

mlspp/CMakeLists.txt

@@ -16,9 +16,10 @@ if(MLS_NAMESPACE_SUFFIX)
     set(MLS_CXX_NAMESPACE "mls_${MLS_NAMESPACE_SUFFIX}" CACHE STRING "Top-level Namespace for CXX")
     set(MLS_EXPORT_NAMESPACE "MLSPP${MLS_NAMESPACE_SUFFIX}" CACHE STRING "Namespace for CMake Export")
 else()
-    set(MLS_CXX_NAMESPACE "../include/dpp/mlspp/mls" CACHE STRING "Top-level Namespace for CXX")
+    set(MLS_CXX_NAMESPACE "mls" CACHE STRING "Top-level Namespace for CXX")
     set(MLS_EXPORT_NAMESPACE "MLSPP" CACHE STRING "Namespace for CMake Export")
 endif()
+
 message(STATUS "CXX Namespace: ${MLS_CXX_NAMESPACE}")
 message(STATUS "CMake Export Namespace: ${MLS_EXPORT_NAMESPACE}")