perf symbols: Fix a memory leak due to symbol__delete not being used

In function symbols__fixup_duplicate(), while duplicated symbols are
found, only the rb_node is removed from the tree. The symbol structures
themself are ignored.  Then, these memory areas are lost.

Signed-off-by: Chenggang Qin <chenggang.qcg@taobao.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Yanmin Zhang <yanmin.zhang@intel.com>
Link: http://lkml.kernel.org/r/1381451279-4109-3-git-send-email-chenggang.qin@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b66c1eefc313..c0c36965fff0 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -160,10 +160,12 @@ again:
 
                 if (choose_best_symbol(curr, next) == SYMBOL_A) {
                         rb_erase(&next->rb_node, symbols);
+                        symbol__delete(next);
                         goto again;
                 } else {
                         nd = rb_next(&curr->rb_node);
                         rb_erase(&curr->rb_node, symbols);
+                        symbol__delete(curr);
                 }
         }
 }