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/limitedmap.h

@@ -70,7 +70,7 @@ public:
         // since it is a constant time operation in C++11. For more details, see
         // https://stackoverflow.com/questions/765148/how-to-remove-constness-of-const-iterator
         iterator itTarget = map.erase(itIn, itIn);
-        
+
         if (itTarget == map.end())
             return;
         std::pair<rmap_iterator, rmap_iterator> itPair = rmap.equal_range(itTarget->second);