[PATCH] Fix for gprof install

[Bob Wilson]

Thiemo Seufer wrote:
> gprof currently fails to install with
> 
> [...]
> ../../head/gprof/gprof.texi:2155: Debugging' has no Up field (perhaps incorrect sectioning?).
> ../../head/gprof/gprof.texi:1981: Next field of node Internals' not pointed to (perhaps incorrect sectioning?).
> ../../head/gprof/gprof.texi:2155: This node (Debugging) has the bad Prev.
> makeinfo: Removing output file ../../head/gprof/gprof.info' due to errors; use --force to preserve.
> make[5]: *** [../../head/gprof/gprof.info] Error 1

Whoops!  Sorry about that.  I thought I had tested a build to make sure my 
change didn't break anything, but apparently I missed this problem.  Thanks for 
fixing it.

--Bob