import changes from `dev' branch of rmottola/Arctic-Fox:

- Bug 559303 - Consolidate strBuf and longStrBuf in the tokenizer. r=wchen. (b385e7635)
- Bug 489820 part 1 - Make charRefBuf non-growable and have the same lifetime as the tokenizer. r=wchen. (5c9a2c402)
- Bug 489820 part 2 - Grow buffers to the worst-case size before tokenizing; fix comments. r=wchen. (7dad72a9a)
- Bug 1176668 - Fix overflow avoidance in numeric character reference handling. r=wchen. (f9cdb2b5b)
- Bug 1171309 - Remove PREF_Init()'s return value. r=bsmedberg. (245dd4436)
- Bug 916101 - Show entire pref name when wanring about size, r=mossop (61245be0f)
- add back crashrep, it is not defined anyway (4995d8d3e)
- Bug 1195123: Restructure logic (pulling out "!") for SVG image rejection, to make it clearer that it matches the comment. r=longsonr (57e3698f6)
- Bug 629682 - Add a better warning message for SVG-as-an-image external resources being blocked. r=dholbert (35ea836e4)
- remove useless cast (abb30e8ac)
- add internal CSP preload check from TFF (14c4d843e)
- Bug 1167650 - Expose DOMRequest and DOMCursor to workers. r=bent (468365262)
- Bug 1154041 - Enable child process memory report logging by default on B2G. r=erahm (141254fc5)
- namespace (515b42704)
- Bug 1164587 - Get rid of Fault() in the cycle collector. r=smaug (9587d4971)

modules/libpref/Preferences.cpp

@@ -517,8 +517,7 @@ Preferences::Init()
 {
   nsresult rv;
 
-  rv = PREF_Init();
-  NS_ENSURE_SUCCESS(rv, rv);
+  PREF_Init();
 
   rv = pref_InitInitialObjects();
   NS_ENSURE_SUCCESS(rv, rv);
@@ -638,8 +637,7 @@ Preferences::ResetPrefs()
   NotifyServiceObservers(NS_PREFSERVICE_RESET_TOPIC_ID);
   PREF_CleanupPrefs();
 
-  nsresult rv = PREF_Init();
-  NS_ENSURE_SUCCESS(rv, rv);
+  PREF_Init();
 
   return pref_InitInitialObjects();
 }