Ensure consistent error handling and improve resource cleanup across widgets and APIs.

apis/nina/main.go

@@ -57,7 +57,12 @@ func FetchWarnings() []Warning {
 			Errormsg: err.Error(),
 		})
 	}
-	defer resp.Body.Close()
+	defer func(Body io.ReadCloser) {
+		err := Body.Close()
+		if err != nil {
+			return
+		}
+	}(resp.Body)
 	respBody, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return append(make([]Warning, 0), Warning{
@@ -86,7 +91,12 @@ func FetchWarnings() []Warning {
 				Errormsg: err.Error(),
 			})
 		}
-		defer resp.Body.Close()
+		defer func(Body io.ReadCloser) {
+			err := Body.Close()
+			if err != nil {
+				return
+			}
+		}(resp.Body)
 		respBody, err := io.ReadAll(resp.Body)
 		if err != nil {
 			return append(make([]Warning, 0), Warning{