dev: add gosec test case

Author: jirfag

test/testdata/gosec.go

@@ -3,7 +3,9 @@ package testdata
 
 import (
 	"crypto/md5" // ERROR "G501: Blacklisted import `crypto/md5`: weak cryptographic primitive"
+	"fmt"
 	"log"
+	"os"
 )
 
 func Gosec() {
@@ -20,3 +22,8 @@ func GosecNolintGosec() {
 	h := md5.New() //nolint:gosec
 	log.Print(h)
 }
+
+func GosecNoErrorCheckingByDefault() {
+	f, _ := os.Create("foo")
+	fmt.Println(f)
+}