varnishevent: only log VCL_Call entries with a colon

bin/varnishevent/varnishevent.c

@@ -177,10 +177,10 @@ static inline logline_t
 
         if (VSTAILQ_EMPTY(&reader_freelist)) {
             LOG_Log0(LOG_DEBUG, "Reader: waiting for free space");
-            if (WRT_Waiting())
-                SIGNAL_SPSCQ_READY();
             waiting = 1;
             AZ(pthread_mutex_lock(&data_ready_lock));
+            if (WRT_Waiting())
+                SIGNAL_SPSCQ_READY();
             waits++;
             AZ(pthread_cond_wait(&data_ready_cond, &data_ready_lock));
             rdr_free = DATA_Take_Freelist(&reader_freelist);
@@ -313,6 +313,9 @@ collect(struct logline_t *lp, enum VSL_tag_e tag, unsigned spec,
 
     if (lp->spec && !(lp->spec & cb_flag))
         return;
+
+    if (tag == SLT_VCL_Log && memchr(ptr, ':', len) == NULL)
+        return;
         
     if (len > config.max_reclen) {
         LOG_Log(LOG_ALERT,

bin/varnishevent/writer.c

@@ -210,11 +210,11 @@ static void
                 errno, strerror(errno));
             errors++;
         }
-	if (wrt_nfree > 0)
-            wrt_return_freelist();
         
         wrt->state = WRT_WAITING;
         AZ(pthread_mutex_lock(&spscq_ready_lock));
+	if (wrt_nfree > 0)
+            wrt_return_freelist();
         /*
 	 * run is guaranteed to be fresh after the lock
 	 */