fix windows issue

gcontini

2020-10-24 a4b1a66a4436c97efbf0dd5932e403d97f0a13d3

 src/library/base/CMakeLists.txt

@@ -1,7 +1,7 @@
ADD_LIBRARY(base OBJECT
    EventRegistry.cpp
    StringUtils.cpp
    file_utils.cpp
    string_utils.cpp
    base64.cpp
    logger.cpp
)