Fix change in logic introduced in https://r.android.com/1666563.

https://r.android.com/c/platform/build/soong/+/1666563/3/cc/image.go#551
introduced a change in logic.

Bug: 188717568

Test: source build/envsetup.sh
Test: m -j nothing
Change-Id: Iab27f1c3ca1a488d074f9c5c61fe071d7d445b91

cc/image.go

@@ -579,7 +579,7 @@ func MutateImage(mctx android.BaseModuleContext, m ImageMutatableModule) {
 
 	// If using a snapshot, the recovery variant under AOSP directories is not needed,
 	// except for kernel headers, which needs all variants.
-	if m.KernelHeadersDecorator() &&
+	if !m.KernelHeadersDecorator() &&
 		!m.IsSnapshotPrebuilt() &&
 		usingRecoverySnapshot &&
 		!isRecoveryProprietaryModule(mctx) {