WyC: bug fix for parsing files with trailing spaces and indentation.
WyC: bug fix for parsing files with trailing spaces and indentation.

hjwylde/whiley-compiler,Whiley/WhileyCompiler,hjwylde/whiley-compiler,hjwylde/whiley-compiler,hjwylde/whiley-compiler,hjwylde/whiley-compiler