readlink: Reduce size by calling _fwrite() instead of puts()

We know how long the output is, so we might as well call _fwrite()
directly, with the explicit termination set to \n instead of \0.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/usr/utils/readlink.c b/usr/utils/readlink.c
index bf9501b..4e3cfcb 100644
--- a/usr/utils/readlink.c
+++ b/usr/utils/readlink.c
@@ -29,8 +29,8 @@
 			perror(name);
 			exit(1);
 		}
-		link_name[rv] = '\0';
-		puts(link_name);
+		link_name[rv] = '\n';
+		_fwrite(link_name, rv+1, stdout);
 	}
 
 	return 0;