Fix golang lint errors (#2068)

* Fix golang lint errors

Signed-off-by: Harsh Thakur <harshthakur9030@gmail.com>

* Typo for fields

Signed-off-by: Harsh Thakur <harshthakur9030@gmail.com>

* Multi error fix

Signed-off-by: Harsh Thakur <harshthakur9030@gmail.com>

* Multi error fix

Signed-off-by: Harsh Thakur <harshthakur9030@gmail.com>

* Add nolint to logtostderr errcheck

Signed-off-by: Harsh Thakur <harshthakur9030@gmail.com>

test/tests/mqtrigger/nats/stan-sub/main.go

@@ -175,7 +175,10 @@ func main() {
 			fmt.Printf("\nReceived signal %s, unsubscribing and closing connection...\n\n", sig.String())
 			// Do not unsubscribe a durable on exit, except if asked to.
 			if durable == "" || unsubscribe {
-				sub.Unsubscribe()
+				err := sub.Unsubscribe()
+				if err != nil {
+					log.Fatal(err)
+				}
 			}
 			sc.Close()
 			cleanupDone <- true

test/tests/test_huge_response/hello.go

@@ -2,15 +2,19 @@ package main
 
 import (
 	"io/ioutil"
+	"log"
 	"net/http"
 )
 
 // Handler is the entry point for this fission function
-func Handler(w http.ResponseWriter, r *http.Request) {
+func Handler(w http.ResponseWriter, r *http.Request) { //nolint: deadcode
 	bytes, err := ioutil.ReadAll(r.Body)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
-	w.Write(bytes)
+	_, err = w.Write(bytes)
+	if err != nil {
+		log.Fatal(err)
+	}
 }