Fix incorrect failure check

app/streaming/video/ffmpeg-renderers/vt_metal.mm

@@ -324,7 +324,7 @@ public:
         pipelineDesc.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOneMinusSourceAlpha;
         [m_OverlayPipelineState release];
         m_OverlayPipelineState = [m_MetalLayer.device newRenderPipelineStateWithDescriptor:pipelineDesc error:nullptr];
-        if (!m_VideoPipelineState) {
+        if (!m_OverlayPipelineState) {
             SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                          "Failed to create overlay pipeline state");
             return false;