fix(CLOB): clob values had wrong values

Appending to the result string now respects the read count.
Fix for second code occurrence of clob transformation.

Author: realityfilter

src/connection.cpp

@@ -802,7 +802,7 @@ void Connection::handleResult(ExecuteBaton* baton, Handle<Value> (&argv)[2]) {
       				int totalBytesRead = 0;
       				while (numBytesRead != -1) {
       					totalBytesRead += numBytesRead;
-      					clobVal.append(buffer);
+      					clobVal.append(buffer, numBytesRead);
       					numBytesRead = instream->readBuffer(buffer, chunkSize);
       				}
       				output->clobVal.closeStream(instream);