Description: fix incorrect HTTP Request header comparison
Origin: backport, http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_10_a.patch
Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=848491

--- a/src/client_side_reply.cc
+++ b/src/client_side_reply.cc
@@ -474,6 +474,16 @@
         return;
     }
 
+    // The previously identified hit suddenly became unsharable!
+    // This is common for collapsed forwarding slaves but might also
+    // happen to regular hits because we are called asynchronously.
+    if (EBIT_TEST(e->flags, KEY_PRIVATE)) {
+        debugs(88, 3, "unsharable " << *e << ". MISS");
+        http->logType = LOG_TCP_MISS;
+        processMiss();
+        return;
+    }
+
     if (result.length == 0) {
         debugs(88, 5, "store IO buffer has no content. MISS");
         /* the store couldn't get enough data from the file for us to id the