Fix an initialization problem

diff --git a/simgear/scene/sky/moon.cxx b/simgear/scene/sky/moon.cxx
index 7eed9c5c4e389499c37436274d675a6d88bda543..dd280f699bd4474dff9d8f62cb5ba2c70b089eff 100644 (file)
--- a/simgear/scene/sky/moon.cxx
+++ b/simgear/scene/sky/moon.cxx
@@ -118,7 +118,9 @@ static int sgMoonHaloPostDraw( ssgEntity *e ) {
 
 
 // Constructor
-SGMoon::SGMoon( void ) {
+SGMoon::SGMoon( void ) :
+    prev_moon_angle(-1)
+{
 }