Android: Copy less configuration data

Change-Id: I8f20addd45fae422f723047689d98e9d903cce6b
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/android/androidconfigurations.cpp

@@ -1077,7 +1077,7 @@ QStringList AndroidDeviceInfo::adbSelector(const QString &serialNumber)
     return QStringList() << QLatin1String("-s") << serialNumber;
 }
 
-AndroidConfig AndroidConfigurations::currentConfig()
+const AndroidConfig &AndroidConfigurations::currentConfig()
 {
     return m_instance->m_config; // ensure that m_instance is initialized
 }

src/plugins/android/androidconfigurations.h

@@ -173,7 +173,7 @@ class AndroidConfigurations : public QObject
     Q_OBJECT
 
 public:
-    static AndroidConfig currentConfig();
+    static const AndroidConfig &currentConfig();
     static void setConfig(const AndroidConfig &config);
     static AndroidConfigurations *instance();