Merge pull request libgit2#5265 from tiennou/fix/xcode-11

cmake: correct the link stanza for CoreFoundation

Author: ethomson

cmake/Modules/SelectHTTPSBackend.cmake

@@ -49,7 +49,7 @@ IF(HTTPS_BACKEND)
 
 		SET(GIT_SECURE_TRANSPORT 1)
 		LIST(APPEND LIBGIT2_SYSTEM_INCLUDES ${SECURITY_INCLUDE_DIR})
-		LIST(APPEND LIBGIT2_LIBS ${COREFOUNDATION_LIBRARIES} ${SECURITY_LIBRARIES})
+		LIST(APPEND LIBGIT2_LIBS ${COREFOUNDATION_LDFLAGS} ${SECURITY_LDFLAGS})
 		LIST(APPEND LIBGIT2_PC_LIBS ${COREFOUNDATION_LDFLAGS} ${SECURITY_LDFLAGS})
 	ELSEIF (HTTPS_BACKEND STREQUAL "OpenSSL")
 		IF (NOT OPENSSL_FOUND)