style: Use space after catch

We are currently inconsistent with whether or not to put a space
after catch clauses. While the predominant style is to omit it,
that's inconsistent with the style we use for any other statement.
There's not really a good reason to stick with it, so switch to
the style gjs/eslint default to.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/607

js/misc/loginManager.js

@@ -43,7 +43,7 @@ function canLock() {
 
         let version = result.deep_unpack()[0].deep_unpack();
         return haveSystemd() && versionCompare('3.5.91', version);
-    } catch(e) {
+    } catch (e) {
         return false;
     }
 }
@@ -185,7 +185,7 @@ var LoginManagerSystemd = class {
                     let [outVariant, fdList] = proxy.call_with_unix_fd_list_finish(result);
                     fd = fdList.steal_fds()[0];
                     callback(new Gio.UnixInputStream({ fd: fd }));
-                } catch(e) {
+                } catch (e) {
                     logError(e, "Error getting systemd inhibitor");
                     callback(null);
                 }