fix: scheme errcheck issues (#28543)

server/.golangci.yml

@@ -89,7 +89,6 @@ issues:
         channels/api4/reaction_test.go|\
         channels/api4/remote_cluster.go|\
         channels/api4/role_test.go|\
-        channels/api4/scheme.go|\
         channels/api4/scheme_test.go|\
         channels/api4/shared_channel.go|\
         channels/api4/status.go|\

server/channels/api4/scheme.go

@@ -105,7 +105,9 @@ func getSchemes(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 getTeamsForScheme(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -142,7 +144,9 @@ func getTeamsForScheme(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 getChannelsForScheme(c *Context, w http.ResponseWriter, r *http.Request) {