[tip:perf/core] perf tools: Add missing parse_events_error() prototype

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  34a0548f01626b01c9e98d9627812c3c9f6b6f7d
Gitweb:     http://git.kernel.org/tip/34a0548f01626b01c9e98d9627812c3c9f6b6f7d
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Wed, 15 Feb 2017 10:09:11 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 15 Feb 2017 11:20:49 -0300

perf tools: Add missing parse_events_error() prototype

As pointed out by clang, we were not providing a prototype for a
function before using it:

  util/parse-events.y:699:6: error: conflicting types for 'parse_events_error'
  void parse_events_error(YYLTYPE *loc, void *data,
       ^
  /tmp/build/perf/util/parse-events-bison.c:2224:7: note: previous implicit declaration is here
        yyerror (&yylloc, _data, scanner, YY_("syntax error"));
        ^
  /tmp/build/perf/util/parse-events-bison.c:65:25: note: expanded from macro 'yyerror'
  #define yyerror         parse_events_error

  1 error generated.

One line fix it.

Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20170215130605.GC4020@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/parse-events.y | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 3a51963..a14b47a 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -17,6 +17,8 @@
 #include "parse-events.h"
 #include "parse-events-bison.h"
 
+void parse_events_error(YYLTYPE *loc, void *data, void *scanner, char const *msg);
+
 #define ABORT_ON(val) \
 do { \
 	if (val) \