diff --git a/.gitignore b/.gitignore
index 6624823..704f410 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ bin
 build
 .DS_Store
 http
+*.swp
diff --git a/external/libs b/external/libs
index 6235794..c18dba4 160000
--- a/external/libs
+++ b/external/libs
@@ -1 +1 @@
-Subproject commit 623579471a0e3f3087173102ee3c9470718ba03e
+Subproject commit c18dba4e0772812732fac380fffcbb9598d410e9
diff --git a/src/office.cpp b/src/office.cpp
index d6306c8..d44c79e 100644
--- a/src/office.cpp
+++ b/src/office.cpp
@@ -39,7 +39,6 @@ BFThreadAsyncID _tidRequestQueue[numWorkerThreads];
 BFLock _queueSema;
 
 void Office::envelopeReceive(Envelope * envelope) {
-	int attempts = 0;
 	int threshold = 25;
 	while (_incomingRequests.get<int>([=] (auto & q) {
 		return q.size();