Removed the trailing ; after namespace {...} declariations in headers

which was being picked as a warning under Codewarrior.

include/osgGLUT/Version

@@ -33,7 +33,7 @@ extern OSGGLUT_EXPORT const char* osgGLUTGetVersion();
 */
 extern OSGGLUT_EXPORT const char* osgGLUTGetLibraryName();
 
-};
+}
 
 #endif
 

include/osgGLUT/Window

@@ -71,6 +71,6 @@ class OSGGLUT_EXPORT Window
 
 };
 
-};
+}
 
 #endif                           // SG_VIEWIER_H