fix trafficgraphdatatests for qt4 (#1699)

Author: UdjinM6

src/qt/test/trafficgraphdatatests.cpp

@@ -186,16 +186,16 @@ void TrafficGraphDataTests::averageBandwidthTest()
     }
     QCOMPARE(trafficGraphData.getCurrentRangeQueueWithAverageBandwidth().size(), TrafficGraphData::DESIRED_DATA_SAMPLES);
     for(auto& sample : trafficGraphData.getCurrentRangeQueueWithAverageBandwidth()){
-        QCOMPARE(sample.in, 1.0);
-        QCOMPARE(sample.out, 1.0);
+        QCOMPARE(sample.in, 1.0f);
+        QCOMPARE(sample.out, 1.0f);
     }
 
     trafficGraphData.switchRange(TrafficGraphData::Range_10m);
 
     QCOMPARE(trafficGraphData.getCurrentRangeQueueWithAverageBandwidth().size(), TrafficGraphData::DESIRED_DATA_SAMPLES / 2);
     for(auto& sample : trafficGraphData.getCurrentRangeQueueWithAverageBandwidth()){
-        QCOMPARE(sample.in, 1.0);
-        QCOMPARE(sample.out, 1.0);
+        QCOMPARE(sample.in, 1.0f);
+        QCOMPARE(sample.out, 1.0f);
     }
 }
 
@@ -217,7 +217,7 @@ void TrafficGraphDataTests::averageBandwidthEvery2EmptyTest()
 
     QCOMPARE(trafficGraphData.getCurrentRangeQueueWithAverageBandwidth().size(), TrafficGraphData::DESIRED_DATA_SAMPLES / 2);
     for(auto& sample : trafficGraphData.getCurrentRangeQueueWithAverageBandwidth()){
-        QCOMPARE(sample.in, 0.5);
-        QCOMPARE(sample.out, 0.5);
+        QCOMPARE(sample.in, 0.5f);
+        QCOMPARE(sample.out, 0.5f);
     }
 }