[PATCH] apitrace trim: Fix SIGSEGV in FastCallSet destructor

[Lawrence L Love]

Recursive delete was looping on all items in next[] array
and stepping on already deleted objects.

Don't loop through the next[] array items. Only need to delete
next[0] in each node. Any other levels point to a next[0]
location.

Signed-off-by: Lawrence L Love <lawrencex.l.love at intel.com>
---
 common/trace_fast_callset.cpp | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/common/trace_fast_callset.cpp b/common/trace_fast_callset.cpp
index d583650..d4fca54 100644
--- a/common/trace_fast_callset.cpp
+++ b/common/trace_fast_callset.cpp
@@ -139,14 +139,12 @@ void
 FastCallSet::rm_node(FastCallRange * node)
 {
     if (node) {
-        for (size_t i = 0; i < (node->level); i++) {
-            rm_node (node->next[i]);
-        }
+        rm_node (node->next[0]);
 
         if (node->next) {
-           delete [] node->next;
+            delete [] node->next;
+            node->next = NULL;
         }
-        node->next = NULL;
         node->level= 0;
         delete node;
         node = NULL;
-- 
1.8.4.rc3