cmake LWS_HAVE_MALLOC_TRIM examples

warmcat/libwebsockets CMakeLists.txt :630 

CHECK_C_SOURCE_COMPILES(
	"#include <malloc.h>
	int main(int argc, char **argv) { return malloc_trim(0); }
	" LWS_HAVE_MALLOC_TRIM)

c-jimenez/open-ocpp 3rdparty/libwebsockets/CMakeLists.txt :558 

CHECK_C_SOURCE_COMPILES(
	"#include <malloc.h>
	int main(int argc, char **argv) { return malloc_trim(0); }
	" LWS_HAVE_MALLOC_TRIM)

fluffos/fluffos src/thirdparty/libwebsockets/CMakeLists.txt :541 

CHECK_C_SOURCE_COMPILES(
	"#include <malloc.h>
	int main(int argc, char **argv) { return malloc_trim(0); }
	" LWS_HAVE_MALLOC_TRIM)