LibPDF: Make DeviceCMYKColorSpace::the() fallible

No behavior change.

Userland/Libraries/LibPDF/ColorSpace.cpp

@@ -53,7 +53,7 @@ PDFErrorOr<NonnullRefPtr<ColorSpace>> ColorSpace::create(DeprecatedFlyString con
     if (name == CommonNames::DeviceRGB)
         return DeviceRGBColorSpace::the();
     if (name == CommonNames::DeviceCMYK)
-        return DeviceCMYKColorSpace::the();
+        return TRY(DeviceCMYKColorSpace::the());
     if (name == CommonNames::Pattern)
         return Error::rendering_unsupported_error("Pattern color spaces not yet implemented");
     VERIFY_NOT_REACHED();
@@ -134,7 +134,7 @@ Vector<float> DeviceRGBColorSpace::default_decode() const
     return { 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f };
 }
 
-NonnullRefPtr<DeviceCMYKColorSpace> DeviceCMYKColorSpace::the()
+ErrorOr<NonnullRefPtr<DeviceCMYKColorSpace>> DeviceCMYKColorSpace::the()
 {
     static auto instance = adopt_ref(*new DeviceCMYKColorSpace());
     return instance;

Userland/Libraries/LibPDF/ColorSpace.h

@@ -112,7 +112,7 @@ private:
 
 class DeviceCMYKColorSpace final : public ColorSpace {
 public:
-    static NonnullRefPtr<DeviceCMYKColorSpace> the();
+    static ErrorOr<NonnullRefPtr<DeviceCMYKColorSpace>> the();
 
     ~DeviceCMYKColorSpace() override = default;
 

Userland/Libraries/LibPDF/Renderer.cpp

@@ -695,14 +695,14 @@ RENDERER_HANDLER(set_painting_color_and_space_to_rgb)
 
 RENDERER_HANDLER(set_stroking_color_and_space_to_cmyk)
 {
-    state().stroke_color_space = DeviceCMYKColorSpace::the();
+    state().stroke_color_space = TRY(DeviceCMYKColorSpace::the());
     state().stroke_style = TRY(state().stroke_color_space->style(args));
     return {};
 }
 
 RENDERER_HANDLER(set_painting_color_and_space_to_cmyk)
 {
-    state().paint_color_space = DeviceCMYKColorSpace::the();
+    state().paint_color_space = TRY(DeviceCMYKColorSpace::the());
     state().paint_style = TRY(state().paint_color_space->style(args));
     return {};
 }