perf annotate: Factor out struct source_line_percent

The source_line_percent struct contains percentage value of the symbol
histogram.  This is a preparation of event group view change.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1362462812-30885-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 6779847..cfae57f 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -257,7 +257,7 @@
 		while (offset < (s64)len &&
 		       (next == NULL || offset < next->offset)) {
 			if (src_line) {
-				percent += src_line[offset].percent;
+				percent += src_line[offset].p[0].percent;
 			} else
 				hits += h->addr[offset];