Android: Do not deploy when missing build config

Fixes deployment on Android

Change-Id: Ie32407afc2151d7fdae62f69b4a1eecd1618da30
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/plugins/android/androiddeployqtstep.cpp

@@ -390,7 +390,7 @@ void AndroidDeployQtStep::run(QFutureInterface<bool> &fi)
         emit setSerialNumber(serialNumber);
     }
 
-    if (m_apkPath.isEmpty()) { // nothing to deploy
+    if (!target()->activeBuildConfiguration()) { // nothing to deploy
         reportRunResult(fi, true);
         return;
     }