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/test/mempool_tests.cpp

@@ -66,7 +66,7 @@ BOOST_AUTO_TEST_CASE(MempoolRemoveTest)
     poolSize = testPool.size();
     testPool.removeRecursive(txParent);
     BOOST_CHECK_EQUAL(testPool.size(), poolSize - 1);
-    
+
     // Parent, children, grandchildren:
     testPool.addUnchecked(txParent.GetHash(), entry.FromTx(txParent));
     for (int i = 0; i < 3; i++)