Don't call plugin if nil

cmd/micro/micro.go

@@ -269,6 +269,8 @@ func main() {
 		action.InfoBar.Display()
 		screen.Screen.Show()
 
+		event = nil
+
 		// Check for new events
 		select {
 		case f := <-shell.Jobs:

internal/config/plugin.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"errors"
+	"log"
 
 	lua "github.com/yuin/gopher-lua"
 	ulua "github.com/zyedidia/micro/internal/lua"
@@ -103,6 +104,10 @@ func (p *Plugin) Load() error {
 
 func (p *Plugin) Call(fn string, args ...lua.LValue) (lua.LValue, error) {
 	plug := ulua.L.GetGlobal(p.Name)
+	if plug == lua.LNil {
+		log.Println("Plugin does not exist:", p.Name, "at", p.DirName, ":", p)
+		return nil, nil
+	}
 	luafn := ulua.L.GetField(plug, fn)
 	if luafn == lua.LNil {
 		return nil, ErrNoSuchFunction