treewide: no need to negate errno for log_*_errno()

It corrrectly handles both positive and negative errno values.

src/cryptsetup/cryptsetup-generator.c

@@ -255,7 +255,7 @@ static int create_disk(
                                   "# Automatically generated by systemd-cryptsetup-generator \n\n"
                                   "[Unit]\nJobTimeoutSec=0");
                 if (r < 0) {
-                        log_error_errno(-r, "Failed to write device drop-in: %m");
+                        log_error_errno(r, "Failed to write device drop-in: %m");
                         return r;
                 }
         }
@@ -327,7 +327,7 @@ int main(int argc, char *argv[]) {
 
         z = parse_proc_cmdline(parse_proc_cmdline_item);
         if (z < 0)
-                log_warning_errno(-z, "Failed to parse kernel command line, ignoring: %m");
+                log_warning_errno(z, "Failed to parse kernel command line, ignoring: %m");
 
         if (!arg_enabled) {
                 r = r2 = EXIT_SUCCESS;