Analytics: minor fixes

dcdbpusher/dcdbpusher.cpp

@@ -99,8 +99,9 @@ bool sensorGroupQueryCallback(const std::vector<string> &names, const uint64_t s
 	if (_queryEngine.updating.load())
 		return false;
 	bool outcome = false;
-	for(const auto& name : names)
-		outcome = outcome || sensorQueryCallback(name, startTs, endTs, buffer, rel);
+	for(const auto& name : names) {
+        outcome = sensorQueryCallback(name, startTs, endTs, buffer, rel) || outcome;
+    }
 	return outcome;
 }