ASSERTION FAILED in ~GraphicsContextGLTextureMapperANGLE

https://bugs.webkit.org/show_bug.cgi?id=249449

Reviewed by Kimmo Kinnunen.

WinCairo WK2 Debug was reporting an assertion failure for
webgl/webgl-fail-platform-context-creation-no-crash.html. The
assertion assumed makeContextCurrent() always succeeded. But, it's not
true. It should check the return value like Cocoa port does.

* Source/WebCore/platform/graphics/texmap/GraphicsContextGLTextureMapperANGLE.cpp:
(WebCore::GraphicsContextGLANGLE::~GraphicsContextGLANGLE):
(WebCore::GraphicsContextGLTextureMapperANGLE::~GraphicsContextGLTextureMapperANGLE):

Canonical link: https://commits.webkit.org/258021@main

Source/WebCore/platform/graphics/texmap/GraphicsContextGLTextureMapperANGLE.cpp

@@ -52,8 +52,9 @@ GraphicsContextGLANGLE::GraphicsContextGLANGLE(GraphicsContextGLAttributes attri
 
 GraphicsContextGLANGLE::~GraphicsContextGLANGLE()
 {
-    bool success = makeContextCurrent();
-    ASSERT_UNUSED(success, success);
+    if (!makeContextCurrent())
+        return;
+
     if (m_texture)
         GL_DeleteTextures(1, &m_texture);
 
@@ -121,8 +122,8 @@ GraphicsContextGLTextureMapperANGLE::GraphicsContextGLTextureMapperANGLE(Graphic
 
 GraphicsContextGLTextureMapperANGLE::~GraphicsContextGLTextureMapperANGLE()
 {
-    bool success = makeContextCurrent();
-    ASSERT_UNUSED(success, success);
+    if (!makeContextCurrent())
+        return;
 
     if (m_compositorTexture)
         GL_DeleteTextures(1, &m_compositorTexture);