cryptsetup: explicitl set default log functions wherever needed

Code using libcryptsetup already sets the global log function if it uses
dlopen_cryptsetup(). Make sure we do the same for the three programs
that explicitly link against libcryptsetup and hence to not use
dlopen_cryptsetup().

src/cryptsetup/cryptsetup.c

@@ -1449,7 +1449,7 @@ static int run(int argc, char *argv[]) {
 
         log_setup();
 
-        cryptsetup_enable_logging(cd);
+        cryptsetup_enable_logging(NULL);
 
         umask(0022);