fix PDCP reset

lib/src/upper/pdcp.cc

@@ -91,14 +91,16 @@ void pdcp::reestablish() {
 
 void pdcp::reset()
 {
-  pthread_rwlock_rdlock(&rwlock);
+  // destroy all bearers
+  pthread_rwlock_wrlock(&rwlock);
   for (pdcp_map_t::iterator it = pdcp_array.begin(); it != pdcp_array.end(); ++it) {
-    it->second->reset();
+    delete(it->second);
-  }
+    pdcp_array.erase(it);
-  if (valid_lcid(0)) {
-    pdcp_array.at(0)->init(rlc, rrc, gw, pdcp_log, default_lcid, default_cnfg);
   }
   pthread_rwlock_unlock(&rwlock);
+
+  // add default SRB0 again
+  add_bearer(0, default_cnfg);
 }
 
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