Bug 1367365 - Disable RCWN r=me a=tomcat

MozReview-Commit-ID: GuIC5Gv09Z3

--HG--
extra : amend_source : 38de21ab56fc9b05109bfc96511f81c718c136d7

modules/libpref/init/all.js

@@ -1683,7 +1683,7 @@ pref("network.http.keep_empty_response_headers_as_empty_string", true);
 pref("network.http.max_response_header_size", 393216);
 
 // If we should attempt to race the cache and network
-pref("network.http.rcwn.enabled", true);
+pref("network.http.rcwn.enabled", false);
 pref("network.http.rcwn.cache_queue_normal_threshold", 8);
 pref("network.http.rcwn.cache_queue_priority_threshold", 2);
 // We might attempt to race the cache with the network only if a resource