update binding/go/CMakeLists.txt

Author: cryptochassis

binding/go/CMakeLists.txt

@@ -121,6 +121,7 @@ foreach(ZLIB_LIBRARY IN LISTS ZLIB_LIBRARIES)
   get_filename_component(ZLIB_LIBRARY_DIR ${ZLIB_LIBRARY} DIRECTORY)
   list(APPEND CGO_LDFLAGS_LIST -L${ZLIB_LIBRARY_DIR} -lz)
 endforeach()
+list(REMOVE_DUPLICATES CGO_LDFLAGS_LIST)
 list(JOIN CGO_LDFLAGS_LIST " " CGO_LDFLAGS)
 message(STATUS "CGO_LDFLAGS: ${CGO_LDFLAGS}")
 file(APPEND ${COMPILER_OPTIONS_FILE_PATH}