scripted-diff: Remove trailing whitespaces

-BEGIN VERIFY SCRIPT-

sed --in-place'' --regexp-extended 's/[[:space:]]+$//g' $(git grep -I --files-with-matches --extended-regexp '[[:space:]]+$' -- src test  ':!*.svg' ':!src/crypto/sha256_sse4*' ':!src/leveldb' ':!src/qt/locale' ':!src/secp256k1' ':!src/univalue')

-END VERIFY SCRIPT-

src/checkqueue.h

@@ -16,7 +16,7 @@
 template <typename T>
 class CCheckQueueControl;
 
-/** 
+/**
  * Queue for verifications that have to be performed.
   * The verifications are represented by a type T, which must provide an
   * operator(), returning a bool.
@@ -163,7 +163,7 @@ public:
 
 };
 
-/** 
+/**
  * RAII-style controller object for a CCheckQueue that guarantees the passed
  * queue is finished before continuing.
  */