add a format specifier to printf

git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@13880 67ed7778-7388-44ab-90cf-0a291f65f57c

packaging/generic/print-camera-list.c

@@ -501,7 +501,7 @@ udev_begin_func (const func_params_t *params, void **data)
 			version_str);
 		print_version_comment(stdout, "# ", "\n", NULL, "#\n");
 		printf ("# this file is autogenerated, local changes will be LOST on upgrades\n");
-		printf (pdata->begin_string);
+		printf ("%s", pdata->begin_string);
 	}
 	return 0;
 }