Fix compiler panic on a selector into

tests/internal/test_branch_location.odin

@@ -0,0 +1,26 @@
+package test_internal
+
+import "core:testing"
+
+@(private="file")
+returns_at :: proc(early: bool, got: ^i32) -> (expected: i32) {
+	defer got^ = #branch_location.line
+
+	if early {
+		return #line
+	}
+
+	return #line
+}
+
+// A selector on `#branch_location` reached `lb_build_addr`, which had no case for a directive
+@(test)
+branch_location_field_access :: proc(t: ^testing.T) {
+	got: i32
+
+	expected := returns_at(true, &got)
+	testing.expect_value(t, got, expected)
+
+	expected = returns_at(false, &got)
+	testing.expect_value(t, got, expected)
+}