Fix cbuffer pretty printing.

test/codegen/texture_sample.golden

@@ -0,0 +1,29 @@
+struct PS_Input;
+
+cbuffer __PROPERTIES : register(b0) 
+{
+}
+
+Texture2D texture : register(t0);
+Sampler sampler : register(s0);
+
+struct PS_Input
+{
+    float2 uv;
+    float4 pos : POSITION;
+}
+
+PS_Input vs_main(float4 pos : POSITION, float2 uv)
+{
+    PS_Input result;
+    result.uv = uv;
+    result.pos = pos;
+    return result;
+}
+
+float4 ps_main(PS_Input input) : SV_TARGET
+{
+    float4 color = texture.sample(input.uv, sampler);
+    return color;
+}
+