Silence spammy iptables rule at boot.

BUG: 28529315
Change-Id: I4818b3833464502a44d9cdb92e3c59802882397b
diff --git a/server/FirewallController.cpp b/server/FirewallController.cpp
index 0a06b9d..839312d 100644
--- a/server/FirewallController.cpp
+++ b/server/FirewallController.cpp
@@ -31,7 +31,7 @@
 using android::base::StringAppendF;
 
 auto FirewallController::execIptables = ::execIptables;
-auto FirewallController::execIptablesSilently = ::execIptables;
+auto FirewallController::execIptablesSilently = ::execIptablesSilently;
 auto FirewallController::execIptablesRestore = ::execIptablesRestore;
 
 const char* FirewallController::TABLE = "filter";