Fix: Complete curves renaming missed in previous commit

This made cycles not render curves. Missed in fe1816f67f

intern/cycles/blender/CMakeLists.txt

@@ -140,7 +140,7 @@ if(WITH_OPENIMAGEDENOISE)
 endif()
 
 if(WITH_EXPERIMENTAL_FEATURES)
-  add_definitions(-DWITH_HAIR_NODES)
+  add_definitions(-DWITH_NEW_CURVES_TYPE)
 endif()
 
 blender_add_lib(bf_intern_cycles "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")