Enable the use of W in Firefox for Android (#1960)

src/drivers/webextension/js/driver.js

@@ -244,10 +244,14 @@ wappalyzer.driver.displayApps = (detected, meta, context) => {
                   icon = 'converted/' + icon.replace(/\.svg$/, '.png');
                 }
 
+                try {
                 	browser.pageAction.setIcon({
                     tabId: tab.id,
                     path: '../images/icons/' + icon
                   });
+                } catch(e) {
+                  // Firefox for Android does not support setIcon see https://bugzilla.mozilla.org/show_bug.cgi?id=1331746
+                }
 
                 found = true;
               }