[PATCH 18/31] perf hist: Add missing 'struct branch_stack' forward declaration

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

Its needed, was being obtained indirectly, fix it.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-srzphk0ehptfn3zqmpkgsi65@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/hist.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 34803e33dc80..6a186b668303 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -15,6 +15,7 @@ struct addr_location;
 struct map_symbol;
 struct mem_info;
 struct branch_info;
+struct branch_stack;
 struct block_info;
 struct symbol;
 struct ui_progress;
-- 
2.21.0