Fix connection timeout leak

Author: porsager

lib/connection.js

@@ -137,7 +137,7 @@ function Connection(options = {}) {
   }
 
   function connect() {
-    connect_timeout && (connect_timer = setTimeout(connectTimedOut, connect_timeout * 1000))
+    connect_timeout && (clearTimeout(connect_timer), connect_timer = setTimeout(connectTimedOut, connect_timeout * 1000))
     socket.connect()
   }
 
@@ -176,7 +176,7 @@ function Connection(options = {}) {
   }
 
   function onready(err) {
-    connect_timer && (clearTimeout(connect_timer), connect_timer = null)
+    clearTimeout(connect_timer)
     if (err) {
       if (backend.query) {
         err.stack += backend.query.origin.replace(/.*\n/, '\n')
@@ -226,7 +226,7 @@ function Connection(options = {}) {
   }
 
   function close() {
-    connect_timer && (clearTimeout(connect_timer), connect_timer = null)
+    clearTimeout(connect_timer)
     error(errors.connection('CONNECTION_CLOSED', options))
     statements = {}
     messages = []