fix widget Monitor with empty string

Author: nighca

tools/ispx/go.mod

@@ -5,7 +5,7 @@ go 1.21
 require (
 	github.com/goplus/igop v0.28.1
 	github.com/goplus/reflectx v1.2.2
-	github.com/goplus/spx v1.1.1-0.20241231062359-381fc67db3e1
+	github.com/goplus/spx v1.1.1-0.20250205081831-c3f6e69289be
 	github.com/hajimehoshi/ebiten/v2 v2.8.0-alpha.3
 )
 

tools/ispx/go.sum

@@ -42,8 +42,8 @@ github.com/goplus/mod v0.13.15 h1:IyneSjwm1VpwvHGz6hSHnFxZCuO6ULHcu74IAZcW9nw=
 github.com/goplus/mod v0.13.15/go.mod h1:invR72Rz2+qpOOsXqxz830MX8/aR2GDR2EAow/WgfHI=
 github.com/goplus/reflectx v1.2.2 h1:T1p20OIH/HcnAvQQNnDLwl6AZOjU34icsfc6migD6L8=
 github.com/goplus/reflectx v1.2.2/go.mod h1:wHOS9ilbB4zrecI0W1dMmkW9JMcpXV7VjALVbNU9xfM=
-github.com/goplus/spx v1.1.1-0.20241231062359-381fc67db3e1 h1:JpAWB4m+LYjEIZwKMVvIeKqqvIjbcLYTXkkvU92Vbkk=
-github.com/goplus/spx v1.1.1-0.20241231062359-381fc67db3e1/go.mod h1:1hkX9vPdDHrsA6LG8itiLMp83KIDJ0KlJI9CmpCoiCA=
+github.com/goplus/spx v1.1.1-0.20250205081831-c3f6e69289be h1:Gfq4iShKChb7zQreePqekbAQN+3Ow6Qk8qWOTk1cmTY=
+github.com/goplus/spx v1.1.1-0.20250205081831-c3f6e69289be/go.mod h1:JjIaVaDVnFasm/bkNHqvtKbd4i1sWScgAf5zPpz4HDw=
 github.com/hajimehoshi/ebiten/v2 v2.8.0-alpha.3 h1:cKpQdzW3I+iLID68l25GaxzPZHSZVRdE9/Pz4SOPBR8=
 github.com/hajimehoshi/ebiten/v2 v2.8.0-alpha.3/go.mod h1:iKp1U/H0J0rv9X4ztGSTXCyN6z/DKKrUL+D9sjg7SbI=
 github.com/hajimehoshi/go-mp3 v0.3.2/go.mod h1:qMJj/CSDxx6CGHiZeCgbiq2DSUkbK0UbtXShQcnfyMM=