errcheck issues fixed (#28609)

server/.golangci.yml

@@ -106,7 +106,6 @@ issues:
         channels/api4/user.go|\
         channels/api4/user_local.go|\
         channels/api4/user_test.go|\
-        channels/api4/webhook.go|\
         channels/api4/webhook_test.go|\
         channels/api4/websocket_test.go|\
         channels/app/admin.go|\

server/channels/api4/webhook.go

@@ -238,7 +238,9 @@ func getIncomingHooks(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	w.Write(js)
+	if _, err := w.Write(js); err != nil {
+		c.Logger.Warn("Error while writing response", mlog.Err(err))
+	}
 }
 
 func getIncomingHook(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -528,7 +530,9 @@ func getOutgoingHooks(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	w.Write(js)
+	if _, err := w.Write(js); err != nil {
+		c.Logger.Warn("Error while writing response", mlog.Err(err))
+	}
 }
 
 func getOutgoingHook(c *Context, w http.ResponseWriter, r *http.Request) {