Bug 1711868 - Only free WebGPU implicit layouts if they are given r=jimb

Differential Revision: https://phabricator.services.mozilla.com/D115537

dom/webgpu/ComputePipeline.cpp

@@ -31,8 +31,10 @@ void ComputePipeline::Cleanup() {
     auto bridge = mParent->GetBridge();
     if (bridge && bridge->IsOpen()) {
       bridge->SendComputePipelineDestroy(mId);
-      bridge->SendImplicitLayoutDestroy(mImplicitPipelineLayoutId,
-                                        mImplicitBindGroupLayoutIds);
+      if (mImplicitPipelineLayoutId) {
+        bridge->SendImplicitLayoutDestroy(mImplicitPipelineLayoutId,
+                                          mImplicitBindGroupLayoutIds);
+      }
     }
   }
 }

dom/webgpu/RenderPipeline.cpp

@@ -31,8 +31,10 @@ void RenderPipeline::Cleanup() {
     auto bridge = mParent->GetBridge();
     if (bridge && bridge->IsOpen()) {
       bridge->SendRenderPipelineDestroy(mId);
-      bridge->SendImplicitLayoutDestroy(mImplicitPipelineLayoutId,
-                                        mImplicitBindGroupLayoutIds);
+      if (mImplicitPipelineLayoutId) {
+        bridge->SendImplicitLayoutDestroy(mImplicitPipelineLayoutId,
+                                          mImplicitBindGroupLayoutIds);
+      }
     }
   }
 }