From 5076b5a683c3b182bda74ecf475aade5d4a053ae Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Sat, 19 May 2018 21:36:17 +0200
Subject: [PATCH] Fix warning of unused variable

---
 .../signal_source/adapters/ad9361_fpga_signal_source.cc     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc b/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc
index 4c95cf547..5e75e0e03 100644
--- a/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc
+++ b/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc
@@ -132,12 +132,18 @@ Ad9361FpgaSignalSource::~Ad9361FpgaSignalSource()
 
 void Ad9361FpgaSignalSource::connect(gr::top_block_sptr top_block)
 {
+    if (top_block)
+        { /* top_block is not null */
+        };
     DLOG(INFO) << "AD9361 FPGA source nothing to connect";
 }
 
 
 void Ad9361FpgaSignalSource::disconnect(gr::top_block_sptr top_block)
 {
+    if (top_block)
+        { /* top_block is not null */
+        };
     DLOG(INFO) << "AD9361 FPGA source nothing to disconnect";
 }