re GNATS gcj/17 (Internal error: segfault on import-classname clash)

Thu Aug 19 10:26:18 1999  Alexandre Petit-Bianco  <apbianco@cygnus.com>

        * parse.y (method_header): Return a null pointer if the current
        class node is null.
        (finish_method_declaration): Return if the current function decl
        is null.
        (source_start_java_method): Likewise.
        (java_method_add_stmt): Likewise.

This fixes the net PR #17.

From-SVN: r28765