fix: role errcheck issues (#28544)

Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>

server/.golangci.yml

@@ -91,7 +91,6 @@ issues:
         channels/api4/preference_test.go|\
         channels/api4/reaction_test.go|\
         channels/api4/remote_cluster.go|\
-        channels/api4/role.go|\
         channels/api4/role_test.go|\
         channels/api4/saml.go|\
         channels/api4/scheme.go|\

server/channels/api4/role.go

@@ -47,7 +47,10 @@ func getAllRoles(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))
+		return
+	}
 }
 
 func getRole(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -119,7 +122,10 @@ func getRolesByNames(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))
+		return
+	}
 }
 
 func patchRole(c *Context, w http.ResponseWriter, r *http.Request) {