http: remove BUG_ON(1) statement

Remove BUG_ON(1) statement that was a leftover from debugging.

Bug #1189
Bug #1212

src/app-layer-htp.c

@@ -781,11 +781,11 @@ static int HTPHandleResponseData(Flow *f, void *htp_state,
     HtpState *hstate = (HtpState *)htp_state;
     hstate->f = f;
     if (hstate->connp == NULL) {
-        SCLogError(SC_ERR_ALPARSER, "HTP state has no connp");
+        SCLogDebug("HTP state has no connp");
         /* till we have the new libhtp changes that allow response first,
          * let's take response in first. */
-        BUG_ON(1);
-        //SCReturnInt(-1);
+        //BUG_ON(1);
+        SCReturnInt(-1);
     }
 
     /* Unset the body inspection (the callback should