logger: Check for unused arguments

There is no place for unused arguments, their are consequence of invalid
argument list as usual.
Such an situation is highly possible especially during defining trace
filters, eg `-Fv=mux 4.1` instead `-F"v=mux 4.1"` or `-Fv=mux4.1`.

Signed-off-by: Karol Trzcinski <karolx.trzcinski@linux.intel.com>

tools/logger/logger.c

@@ -262,6 +262,11 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	if (argc != optind) {
+		fprintf(stderr, "error: Unused parameter '%s'\n", argv[optind]);
+		usage();
+	}
+
 	if (snapshot_file)
 		return baud ? EINVAL : -snapshot(snapshot_file);