Fix some golangci-lint warnings

Minor changes

profile.go

@@ -10,7 +10,7 @@ import (
 	"github.com/PuerkitoBio/goquery"
 )
 
-// Profile of twitter user
+// Profile of twitter user.
 type Profile struct {
 	Avatar         string
 	Biography      string
@@ -27,26 +27,28 @@ type Profile struct {
 	Website        string
 }
 
-// GetProfile return parsed user profile
+// GetProfile return parsed user profile.
 func GetProfile(username string) (Profile, error) {
 	url := "https://twitter.com/" + username
 
 	req, err := http.NewRequest("GET", url, nil)
-
 	if err != nil {
 		return Profile{}, err
 	}
 
 	req.Header.Set("Accept-Language", "en-US")
 
-	res, err := http.DefaultClient.Do(req)
-
-	if res == nil {
+	resp, err := http.DefaultClient.Do(req)
+	if resp == nil {
 		return Profile{}, err
 	}
+	defer resp.Body.Close()
 
-	doc, err := goquery.NewDocumentFromReader(res.Body)
+	if resp.StatusCode != http.StatusOK {
+		return Profile{}, fmt.Errorf("response status: %s", resp.Status)
+	}
 
+	doc, err := goquery.NewDocumentFromReader(resp.Body)
 	if err != nil {
 		return Profile{}, err
 	}

trends.go

@@ -8,7 +8,7 @@ import (
 
 const trendsURL = "https://twitter.com/i/trends"
 
-// GetTrends return list of trends
+// GetTrends return list of trends.
 func GetTrends() ([]string, error) {
 	req, err := http.NewRequest("GET", trendsURL, nil)
 	if err != nil {

tweets.go

@@ -13,13 +13,13 @@ import (
 
 const ajaxURL = "https://twitter.com/i/profiles/show/%s/timeline/tweets"
 
-// Video type
+// Video type.
 type Video struct {
 	ID      string
 	Preview string
 }
 
-// Tweet type
+// Tweet type.
 type Tweet struct {
 	Hashtags     []string
 	HTML         string
@@ -38,13 +38,13 @@ type Tweet struct {
 	Videos       []Video
 }
 
-// Result of scrapping
+// Result of scrapping.
 type Result struct {
 	Tweet
 	Error error
 }
 
-// GetTweets returns channel with tweets for a given user
+// GetTweets returns channel with tweets for a given user.
 func GetTweets(user string, pages int) <-chan *Result {
 	channel := make(chan *Result)
 	go func(user string) {
@@ -66,7 +66,7 @@ func GetTweets(user string, pages int) <-chan *Result {
 	return channel
 }
 
-// FetchTweets gets tweets for a given user, via the Twitter frontend API
+// FetchTweets gets tweets for a given user, via the Twitter frontend API.
 func FetchTweets(user string, last string) ([]*Tweet, error) {
 	var tweets []*Tweet
 
@@ -119,13 +119,14 @@ func FetchTweets(user string, last string) ([]*Tweet, error) {
 			})
 			s.Find(".ProfileTweet-actionCount").Each(func(i int, c *goquery.Selection) {
 				txt := strings.TrimSpace(c.Text())
-				if strings.HasSuffix(txt, "likes") {
+				switch {
+				case strings.HasSuffix(txt, "likes"):
 					l := strings.Split(txt, " ")
 					tweet.Likes, _ = strconv.Atoi(l[0])
-				} else if strings.HasSuffix(txt, "replies") {
+				case strings.HasSuffix(txt, "replies"):
 					l := strings.Split(txt, " ")
 					tweet.Replies, _ = strconv.Atoi(l[0])
-				} else if strings.HasSuffix(txt, "retweets") {
+				case strings.HasSuffix(txt, "retweets"):
 					l := strings.Split(txt, " ")
 					tweet.Retweets, _ = strconv.Atoi(l[0])
 				}