Bug 1710552 - pt 3. Fix some whitespace r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D120832

dom/base/CCGCScheduler.h

@@ -178,6 +178,7 @@ class CCGCScheduler {
       SetNeedsFullGC();
     }
   }
+
   // Ensure that the current runner does a cycle collection, and trigger a GC
   // after it finishes.
   void EnsureCCThenGC() {