Update clippy to rust-lang/rust-clippy@d61b25419be

Manishearth · Manishearth · commit cd99bd3a3d64 · 2019-02-19T13:36:31.000+05:30
diff --git a/src/tools/clippy b/src/tools/clippy
@@ -1 +1 @@
-Subproject commit 32ee306acbf87de1d7723e95e99c0e5e56e53749
+Subproject commit d61b25419bec5a3e839fdb16f720cfb12e52ddf1
