errcheck issues fixed (#28418)

server/.golangci.yml

@@ -87,7 +87,6 @@ issues:
         channels/api4/ip_filtering.go|\
         channels/api4/ip_filtering_test.go|\
         channels/api4/job_test.go|\
-        channels/api4/ldap.go|\
         channels/api4/license.go|\
         channels/api4/license_local.go|\
         channels/api4/license_test.go|\

server/channels/api4/ldap.go

@@ -140,7 +140,9 @@ func getLdapGroups(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	w.Write(b)
+	if _, err := w.Write(b); err != nil {
+		c.Logger.Warn("Error while writing response", mlog.Err(err))
+	}
 }
 
 func linkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -240,7 +242,9 @@ func linkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 	auditRec.Success()
 
 	w.WriteHeader(status)
-	w.Write(b)
+	if _, err := w.Write(b); err != nil {
+		c.Logger.Warn("Error while writing response", mlog.Err(err))
+	}
 }
 
 func unlinkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {