Fix latent bug in crossjumping

[Steven Bosscher]

Op do 13-02-2003, om 14:09 schreef Josef Zlomek:
> Hi,
> 
> gcc creates a reference to an undefined label when compiling the
> attached testcase with "-O -fpic".

You're the man! :-)

If the fix is OK, you can close high priority PRs c/7887, java/8866, and
java/8154.  Two hi-pri bugs gone!

Another suspects are c++/8819, and maybe c/7289 too, but for the latter
unfortunately there is no test case to reproduce the bug :-/

Greetz
Steven