Small tweaks to class initialization.

simgear/ephemeris/stardata.cxx

@@ -32,10 +32,14 @@
 #endif
 
 // Constructor
-SGStarData::SGStarData() {
+SGStarData::SGStarData() :
+    nstars(0)
+{
 }
 
-SGStarData::SGStarData( SGPath path ) {
+SGStarData::SGStarData( SGPath path ) :
+    nstars(0)
+{
     data_path = SGPath( path );
     load();
 }

simgear/misc/sg_path.cxx

@@ -53,13 +53,16 @@ static string fix_path( const string path ) {
 
 
 // default constructor
-SGPath::SGPath() {
-    path = "";
+SGPath::SGPath() :
+    path("")
+{
 }
 
 
 // create a path based on "path"
-SGPath::SGPath( const string p ) {
+SGPath::SGPath( const string p ) :
+    path("")
+{
     set( p );
 }
 

simgear/timing/timestamp.hxx

@@ -102,7 +102,10 @@ public:
     inline long get_usec() const { return usec; }
 };
 
-inline SGTimeStamp::SGTimeStamp() {
+inline SGTimeStamp::SGTimeStamp() :
+    seconds(0),
+    usec(0)
+{
 }
 
 inline SGTimeStamp::SGTimeStamp( const long s, const long u ) {