cmake LWS_HAVE_RSA_SET0_KEY examples

warmcat/libwebsockets lib/tls/CMakeLists.txt :333 

CHECK_FUNCTION_EXISTS(${VARIA}RSA_set0_key LWS_HAVE_RSA_SET0_KEY PARENT_SCOPE)

c-jimenez/open-ocpp 3rdparty/libwebsockets/lib/tls/CMakeLists.txt :329 

CHECK_FUNCTION_EXISTS(${VARIA}RSA_set0_key LWS_HAVE_RSA_SET0_KEY PARENT_SCOPE)

fluffos/fluffos src/thirdparty/libwebsockets/lib/tls/CMakeLists.txt :310 

CHECK_FUNCTION_EXISTS(${VARIA}RSA_set0_key LWS_HAVE_RSA_SET0_KEY PARENT_SCOPE)