Fix uninitialized values (valgrind report)

src/modules/partition/gui/EncryptWidget.cpp

@@ -23,6 +23,7 @@
 
 EncryptWidget::EncryptWidget( QWidget* parent )
     : QWidget( parent )
+    , m_state( EncryptionDisabled )
 {
     setupUi( this );
 

src/modules/welcome/checker/partman_devices.c

@@ -112,7 +112,7 @@ process_device(PedDevice *dev)
 int
 check_big_enough(long long required_space)
 {
-    PedDevice *dev;
+    PedDevice *dev = NULL;
     ped_exception_fetch_all();
     ped_device_probe_all();