d3dcompiler/tests: Add a couple of extra tests for struct declaration syntax.

dlls/d3dcompiler_43/tests/hlsl_d3d9.c

@@ -968,7 +968,7 @@ static void test_constant_table(void)
 {
     static const char *source =
         "typedef float3x3 matrix_t;\n"
-        "struct matrix_record { float3x3 a; };\n"
+        "struct matrix_record { float3x3 a; } dummy;\n"
         "uniform float4 a;\n"
         "uniform float b;\n"
         "uniform float unused;\n"
@@ -1193,6 +1193,12 @@ static void test_fail(void)
         "    o = float4(1, 1, 1, 1);\n"
         "    return float4(0, 0, 0, 0);\n"
         "}",
+
+        "struct {float4 a;};\n"
+        "float4 test() : SV_TARGET\n"
+        "{\n"
+        "    return float4(0, 0, 0, 0);\n"
+        "}",
     };
 
     static const char *targets[] = {"ps_2_0", "ps_3_0", "ps_4_0"};