Bug 1462882 - Avoid NPE when filtering using remote-ip; r=jryans

MozReview-Commit-ID: IJ2lNgMRCYz

--HG--
extra : rebase_source : 6cb4b7ea83e8e363a6ce635883ca39fe2e08791a

devtools/client/netmonitor/src/utils/filter-text-utils.js

@@ -128,8 +128,8 @@ function isFlagFilterMatch(item, { type, value, negative }) {
       match = item.urlDetails.host.toLowerCase().includes(value);
       break;
     case "remote-ip":
-      match = getFormattedIPAndPort(item.remoteAddress, item.remotePort)
-        .toLowerCase().includes(value);
+      let data = getFormattedIPAndPort(item.remoteAddress, item.remotePort);
+      match = data ? data.toLowerCase().includes(value) : false;
       break;
     case "has-response-header":
       if (typeof item.responseHeaders === "object") {