Update clippy

Manishearth · Manishearth · commit feaf2ae3198d · 2019-04-14T15:56:58.000-07:00
diff --git a/src/tools/clippy b/src/tools/clippy
@@ -1 +1 @@
-Subproject commit abf7f911d88e9209b54cfba2776d7dbca5a440ce
+Subproject commit fbb3a47b90b6468ae9cb308c3f49548c78615326
