Extend the bind rule to handle the case when the net.Listen address in provided from a const

testutils/source.go

@@ -134,6 +134,21 @@ func main() {
 		log.Fatal(err)
 	}
 	defer l.Close()
+}`}, 1},
+		{[]string{`
+package main
+import (
+	"log"
+   	"net"
+)
+const addr = "0.0.0.0:2000"
+
+func main() {
+	l, err := net.Listen("tcp", addr)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer l.Close()
 }`}, 1},
 	}
 	// SampleCodeG103 find instances of unsafe blocks for auditing purposes