perf tools: Fix shadowed declaration in parse-events.c
perf tools: Fix shadowed declaration in parse-events.c

The error variable breaks build on CentOS 6.7, due to a collision with a
global error symbol:

    CC       util/parse-events.o
  cc1: warnings being treated as errors
  util/parse-events.c:419: error: declaration of ‘error’ shadows a global
  declaration
  util/util.h:135: error: shadowed declaration is here
  util/parse-events.c: In function ‘add_tracepoint_multi_event’:
  ...

Using different argument names instead to fix it.

Reported-by: Vinson Lee <25a259f709b0f1b620605d2518271a846d8826e5@twopensource.com>
Signed-off-by: Jiri Olsa <2c6594f608aa3d41e98d48846a6328831f7084ad@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <293abb6b76d7791c0732cc517d38c4b5c734b87f@redhat.com>
Cc: David Ahern <b80c1600f604d3b0d768f26f90a76757e76005dd@gmail.com>
Cc: He Kuang <01189f839f5c53a9f0c5f5c6cb807be9767d9e1e@huawei.com>
Cc: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@zytor.com>
Cc: Jiri Olsa <2c6594f608aa3d41e98d48846a6328831f7084ad@kernel.org>
Cc: 09b1762fcf41f26fbda32c5ffb1a8567387358d3@vger.kernel.org
Cc: Matt Fleming <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@codeblueprint.co.uk>
Cc: Namhyung Kim <5c915a589b3ddf58cebf14bec41bcc143b37ac3c@kernel.org>
Cc: Peter Zijlstra <645ca7d3a8d3d4f60557176cd361ea8351edc32b@chello.nl>
Cc: Raphael Beamonte <438a3daf2723c71840a50a5e45743d848fc555ba@gmail.com>
Cc: Thomas Gleixner <00e4cf8f46a57000a44449bf9dd8cbbcc209fd2a@linutronix.de>
Link: 4cae3ad62c6e1d2fff268c8b76cea94ceea9a7a8@krava.redhat.com
[ Fix one more case, at line 770 ]
Signed-off-by: Arnaldo Carvalho de Melo <293abb6b76d7791c0732cc517d38c4b5c734b87f@redhat.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs