Bug 1391331 - Make space between bookmark item icon and label 4px instead of 5px. r=johannh

MozReview-Commit-ID: E8D9k5nF26b

--HG--
extra : rebase_source : 7da4b2c5f6582a9da7eb11a539e567e575c64946

browser/themes/shared/toolbarbuttons.inc.css

@@ -280,5 +280,5 @@ toolbarbutton.bookmark-item:not(.subviewbutton) {
 }
 
 #PlacesToolbarItems > .bookmark-item > .toolbarbutton-icon[label]:not([label=""]) {
-  margin-inline-end: 5px;
+  margin-inline-end: 4px;
 }