cmake LWS_HAVE_MALLOC examples

warmcat/libwebsockets CMakeLists.txt :645 

CHECK_FUNCTION_EXISTS(malloc LWS_HAVE_MALLOC)

c-jimenez/open-ocpp 3rdparty/libwebsockets/CMakeLists.txt :569 

CHECK_FUNCTION_EXISTS(malloc LWS_HAVE_MALLOC)

fluffos/fluffos src/thirdparty/libwebsockets/CMakeLists.txt :552 

CHECK_FUNCTION_EXISTS(malloc LWS_HAVE_MALLOC)