test now passes

tests-std/test51.out

@@ -0,0 +1,9 @@
+main() {
+        if (nerror) cleanup();
+        else if (argc < 1) faterror("no input file%s", cmdusage);
+        else for (;  0 < argc;  cleanup(), ++argv, --argc) {
+          targetdelta = 0;
+          ffree();
+        }
+}
+