Decode: don't break on non-struct embed field (#810)

unmarshaler.go

@@ -1211,7 +1211,10 @@ func forEachField(t reflect.Type, path []int, do func(name string, path []int))
 			if t2.Kind() == reflect.Pointer {
 				t2 = t2.Elem()
 			}
-			forEachField(t2, fieldPath, do)
+
+			if t2.Kind() == reflect.Struct {
+				forEachField(t2, fieldPath, do)
+			}
 			continue
 		}
 

unmarshaler_test.go

@@ -3288,3 +3288,16 @@ func TestUnmarshal_RecursiveTableArray(t *testing.T) {
 		})
 	}
 }
+
+func TestUnmarshalEmbedNonString(t *testing.T) {
+	type Foo []byte
+	type doc struct {
+		Foo
+	}
+
+	d := doc{}
+
+	err := toml.Unmarshal([]byte(`foo = 'bar'`), &d)
+	require.NoError(t, err)
+	require.Nil(t, d.Foo)
+}