Bug 1340197 - Don't wait for concurrent HTTP cache entry when the depending load is a top-level navigation. r=michal

netwerk/protocol/http/nsHttpChannel.cpp

@@ -4118,6 +4118,13 @@ nsHttpChannel::OnCacheEntryCheck(nsICacheEntry* entry, nsIApplicationCache* appC
 
             // Ignore !(size > 0) from the resumability condition
             if (!IsResumable(size, contentLength, true)) {
+                if (IsNavigation()) {
+                    LOG(("  bypassing wait for the entry, "
+                         "this is a navigational load"));
+                    *aResult = ENTRY_NOT_WANTED;
+                    return NS_OK;
+                }
+
                 LOG(("  wait for entry completion, "
                      "response is not resumable"));