Don't run new test on Darwin that lacks snapshot support.

Test: m nothing
Bug: 152514829
Bug: 152255951
Change-Id: Ib14af7caa408e252242e6933f7281aab3888789c
diff --git a/sdk/cc_sdk_test.go b/sdk/cc_sdk_test.go
index 32176e5..eb64bcc 100644
--- a/sdk/cc_sdk_test.go
+++ b/sdk/cc_sdk_test.go
@@ -1539,6 +1539,9 @@
 }
 
 func TestSystemSharedLibPropagation(t *testing.T) {
+	// b/145598135 - Generating host snapshots for anything other than linux is not supported.
+	SkipIfNotLinux(t)
+
 	result := testSdkWithCc(t, `
 		sdk {
 			name: "mysdk",