Fixing a build warning in OpenSUSE about control reaching the end of a non-void function; see e-mail from Johannes Obermayr dated February 6, 2012 at 9:40 AM

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1074 7f0cb862-5218-0410-a997-914c9d46530a

freeglut/freeglut/src/x11/freeglut_state_x11.c

@@ -211,6 +211,8 @@ int fgPlatformGlutGet ( GLenum eWhat )
         fgWarning( "glutGet(): missing enum handle %d", eWhat );
         break;
     }
+
+	return -1;
 }