fix jemalloc cfgs lacking msvc conditions

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/config/check.rs

@@ -38,7 +38,7 @@ pub fn check(config: &Config) -> Result {
 		));
 	}
 
-	if cfg!(all(feature = "hardened_malloc", feature = "jemalloc")) {
+	if cfg!(all(feature = "hardened_malloc", feature = "jemalloc", not(target_env = "msvc"))) {
 		debug_warn!(
 			"hardened_malloc and jemalloc compile-time features are both enabled, this causes \
 			 jemalloc to be used."