Adding new line to the end of nsHtml5SpeculativeLoader.h to avoid dozens of compiler warnings. trivial fix, no bug

--HG--
extra : rebase_source : c32715faff9ea1c2e06b41ffa9ca1f1e316c68f8

parser/html/nsHtml5SpeculativeLoader.h

@@ -84,4 +84,5 @@ class nsHtml5SpeculativeLoader
     nsCStringHashSet mPreloadedURLs;
 };
 
-#endif // nsHtml5SpeculativeLoader_h__
+#endif // nsHtml5SpeculativeLoader_h__
+