message: fix linux linking for zlib
diff: @@ -199,7 +199,7 @@ include_directories(SYSTEM ${ZLIB_PATH_BIN}/install/include)
  # Add zlib project libs to the libs with which RINGMesh will link
  if(UNIX)
  - set(EXTRA_LIBS ${EXTRA_LIBS} debug zd optimized z)
  + set(EXTRA_LIBS ${EXTRA_LIBS} z)
  else()
  set(EXTRA_LIBS ${EXTRA_LIBS} debug zlibd optimized zlib)
  endif()
  