GL: Fixed MSAA + stencil.

src/renderer_gl.cpp

@@ -1593,8 +1593,8 @@ namespace bgfx
 				GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_msaaBackBufferRbos[0]) );
 
 				GLenum attachment = BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGL) || BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGLES >= 30) 
-					? GL_DEPTH_ATTACHMENT 
-					: GL_DEPTH_STENCIL_ATTACHMENT
+					? GL_DEPTH_STENCIL_ATTACHMENT
+					: GL_DEPTH_ATTACHMENT 
 					;
 				GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, attachment, GL_RENDERBUFFER, m_msaaBackBufferRbos[1]) );