Fix Cmake build issue

FIx cmake build.

Author: ya1gaurav

CMakeLists.txt

@@ -114,6 +114,7 @@ ELSEIF(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
 
     IF(JSONCPP_WITH_STRICT_ISO)
         SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic")
+    ENDIF()
     IF(JSONCPP_WITH_WARNING_AS_ERROR)
         SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=conversion")
     ENDIF()