Workaround a bug in the JavaParser 3p library

A bug in the JavaParser LexicalPreservingPrinter prevents
the ProtoLogTool from correctly handling multiple subsequent
ProtoLog calls. This bug is a known issue, no fix is worked on
at this moment (https://github.com/javaparser/javaparser/issues/2290).

Bug:
Test: atest protologtool-tests
Change-Id: I919527a31c5ed21b17e5f3e271c2758d35896ea5