Fix widget initialization

widgets/cpu.go

@@ -34,7 +34,9 @@ func NewCPU(interval time.Duration, zoom int) *CPU {
 		self.Data["Average"] = []float64{0}
 	}
 
+	// update asynchronously because of 1 second blocking period
 	go self.update()
+
 	ticker := time.NewTicker(self.interval)
 	go func() {
 		for range ticker.C {

widgets/disk.go

@@ -23,7 +23,8 @@ func NewDisk() *Disk {
 	}
 	self.Label = "Disk Usage"
 
-	go self.update()
+	self.update()
+
 	ticker := time.NewTicker(self.interval)
 	go func() {
 		for range ticker.C {

widgets/mem.go

@@ -22,7 +22,8 @@ func NewMem(interval time.Duration, zoom int) *Mem {
 	self.Data["Main"] = []float64{0}
 	self.Data["Swap"] = []float64{0}
 
-	go self.update()
+	self.update()
+
 	ticker := time.NewTicker(self.interval)
 	go func() {
 		for range ticker.C {

widgets/net.go

@@ -31,7 +31,8 @@ func NewNet() *Net {
 	}
 	self.Label = "Network Usage"
 
-	go self.update()
+	self.update()
+
 	ticker := time.NewTicker(self.interval)
 	go func() {
 		for range ticker.C {

widgets/temp.go

@@ -31,7 +31,8 @@ func NewTemp() *Temp {
 	}
 	self.Label = "Temperatures"
 
-	go self.update()
+	self.update()
+
 	ticker := time.NewTicker(self.interval)
 	go func() {
 		for range ticker.C {