Fix OSX issue with ctor not recognizing version with defaulted arg.

indra/newview/lldrawpoolsky.cpp

@@ -102,7 +102,7 @@ void LLDrawPoolSky::render(S32 pass)
 
 	LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE);
 
-	LLGLSquashToFarClip far_clip(get_current_projection());
+	LLGLSquashToFarClip far_clip;
 
 	LLGLEnable fog_enable( (mVertexShaderLevel < 1 && LLViewerCamera::getInstance()->cameraUnderWater()) ? GL_FOG : 0);