Fix CQS signal modernize-avoid-c-arrays in fbcode/proxygen/lib

Reviewed By: afrind

Differential Revision: D84847722

fbshipit-source-id: 364dc4a7220fc8119773bcc0051ba502a46890f6

Author: generatedunixname537391475639613

third-party/proxygen/src/proxygen/lib/test/TestAsyncTransport.h

@@ -42,7 +42,7 @@ class TestAsyncTransport
 
     proxygen::TimePoint time_;
     size_t count_;
-    struct iovec vec_[];
+    struct iovec vec_[]; // NOLINT(modernize-avoid-c-arrays)
   };
 
   explicit TestAsyncTransport(folly::EventBase* eventBase);