When reading the service provider name from a jar
a BufferedReader is used to read the first line from the
file. BufferedReader's default buffer size is 8K chars. Since
we're only reading one line (the name of a class) this is pretty
excessive. Reducing this size significantly to 80 chars.
The reader used to read the service provider is never
closed if an IOException is thrown while reading from
it. Adding a finally block so that the reader will
always be closed.
git-svn-id: https://svn.apache.org/repos/asf/xml/commons/trunk@226251 13f79535-47bb-0310-9956-ffa450edef68