fixed bad API call and when coalesced is thrown after DNS lookup

lib/httpx/connection.rb

@@ -111,8 +111,8 @@ module HTTPX
     def merge(connection)
       @origins += connection.instance_variable_get(:@origins)
       pending = connection.instance_variable_get(:@pending)
-      pending.each do |req, args|
-        send(req, args)
+      pending.each do |req|
+        send(req)
       end
     end
 

lib/httpx/resolver/resolver_mixin.rb

@@ -32,7 +32,7 @@ module HTTPX
         end
         log(label: "resolver: ") { "answer #{connection.origin.host}: #{addresses.inspect}" }
         connection.addresses = addresses
-        emit(:resolve, connection)
+        catch(:coalesced) { emit(:resolve, connection) }
       end
 
       def early_resolve(connection, hostname: connection.origin.host)