Merge "Prevent crash when elm_win_add fails" into tizen

diff --cc src/common.cpp
index 6c2af0d,40730f2..62065ce
--- 1/src/common.cpp
--- 2/src/common.cpp
+++ b/src/common.cpp
@@@ -412,8 -412,14 +412,12 @@@ void CISECommon::run(const sclchar *uui
      }
      LOGD ("Selected engine: '%s'\n", wskb.ee_engine);
  #endif
 -#ifdef WAYLAND
 -    elm_config_preferred_engine_set("wayland_shm");
 -#endif
 +
      m_main_window = elm_win_add(NULL, "Tizen Keyboard", ELM_WIN_UTILITY);
+     if (!m_main_window) {
+         LOGE("Failed to create main window\n");
+         return;
+     }
  
  #ifdef WAYLAND
      wskb.ee = ecore_evas_ecore_evas_get (evas_object_evas_get (m_main_window));