LibC: Implement explicit_bzero with AK::secure_zero

Author: https://github.com/bgianfo
Commit: 43f4292ca0
Pull-request: https://github.com/SerenityOS/serenity/pull/10008
Reviewed-by: https://github.com/Dexesttp ✅

Userland/Libraries/LibC/string.cpp

@@ -6,6 +6,7 @@
 
 #include <AK/Format.h>
 #include <AK/MemMem.h>
+#include <AK/Memory.h>
 #include <AK/Platform.h>
 #include <AK/StdLibExtras.h>
 #include <AK/Types.h>
@@ -481,8 +482,6 @@ size_t strxfrm(char* dest, const char* src, size_t n)
 
 void explicit_bzero(void* ptr, size_t size)
 {
-    memset(ptr, 0, size);
-    asm volatile("" ::
-                     : "memory");
+    secure_zero(ptr, size);
 }
 }