cmake LWS_HAVE_NETINET_IN_H examples

warmcat/libwebsockets CMakeLists.txt :671 

CHECK_C_SOURCE_COMPILES("#include <netinet/in.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_NETINET_IN_H)

c-jimenez/open-ocpp 3rdparty/libwebsockets/CMakeLists.txt :635 

CHECK_INCLUDE_FILE(netinet/in.h LWS_HAVE_NETINET_IN_H)

fluffos/fluffos src/thirdparty/libwebsockets/CMakeLists.txt :618 

CHECK_INCLUDE_FILE(netinet/in.h LWS_HAVE_NETINET_IN_H)