initialize server channel earlier for config file

Mentioned in #36.

app.go

@@ -3,7 +3,6 @@ package main
 import (
 	"fmt"
 	"log"
-	"net"
 	"os"
 	"os/exec"
 	"strconv"
@@ -55,20 +54,9 @@ func waitKey() error {
 // This is the main event loop of the application. There are two channels to
 // read expressions from client and server. Reading and evaluation are done on
 // separate goroutines.
-func (app *app) handleInp() {
+func (app *app) handleInp(serverChan <-chan expr) {
 	clientChan := app.ui.readExpr()
 
-	var serverChan <-chan expr
-
-	c, err := net.Dial("unix", gSocketPath)
-	if err != nil {
-		msg := fmt.Sprintf("connecting server: %s", err)
-		app.ui.message = msg
-		log.Printf(msg)
-	} else {
-		serverChan = readExpr(c)
-	}
-
 	for {
 		select {
 		case <-app.quit:

client.go

@@ -31,6 +31,17 @@ func client() {
 
 	app.ui.loadFile(app.nav)
 
+	var serverChan <-chan expr
+
+	c, err := net.Dial("unix", gSocketPath)
+	if err != nil {
+		msg := fmt.Sprintf("connecting server: %s", err)
+		app.ui.message = msg
+		log.Printf(msg)
+	} else {
+		serverChan = readExpr(c)
+	}
+
 	if err := app.nav.sync(); err != nil {
 		msg := fmt.Sprintf("sync: %s", err)
 		app.ui.message = msg
@@ -61,7 +72,7 @@ func client() {
 
 	app.ui.draw(app.nav)
 
-	app.handleInp()
+	app.handleInp(serverChan)
 }
 
 func readExpr(c net.Conn) <-chan expr {