add missing ladspa headers for juce

libs/juce-legacy/meson.build

@@ -38,6 +38,7 @@ lib_juce_legacy = static_library('juce-legacy',
         include_directories('.'),
         include_directories('source'),
         include_directories('source' / 'modules'),
+        include_directories('..' / 'juced' / 'source' / 'dependancies' / 'ladspa_sdk' / 'src'),
     ],
     cpp_args: build_flags_cpp,
     dependencies: dependencies,