fix issue with threatindicator playing no animation because of default initialization of state

src/de/tudarmstadt/informatik/hostage/ui2/fragment/opengl/ThreatIndicatorGLRenderer.java

@@ -97,6 +97,8 @@ public class ThreatIndicatorGLRenderer implements Renderer {
 			if (sPlayGreetingAnimation) {
 				androidMesh.startAction("greet", false, false);
 				sPlayGreetingAnimation = false;
+			} else if (mCurrentThreatLevel == ThreatLevel.NO_THREAT) { // default state
+				androidMesh.startAction("happy", true, false); // play NO_THREAT animation
 			}
 		} catch (IOException e) {
 			Log.e("gl", "Couldn't open android mesh");