fixed issue with: [libretro ERROR] [G3D] glewInit() failed

I looked at https://github.com/hrydgard/ppsspp/issues/12145 and used part of the logic from SDL headless -> https://github.com/hrydgard/ppsspp/blob/1ba7e0154882bded821aef1e2e83a6c3b1e609e0/headless/SDLHeadlessHost.cpp and removed the return, as the comment below mentions that glew can fail, as well as the QT code also does not check for the return value: https://github.com/hrydgard/ppsspp/blob/1c8ac05b06047d1559794094f3637b74b202c8fe/Qt/QtMain.cpp#L450

libretro/LibretroGLContext.cpp

@@ -16,18 +16,26 @@ bool LibretroGLContext::Init() {
 }
 
 void LibretroGLContext::CreateDrawContext() {
-	if (!glewInitDone) {
-#if !defined(IOS) && !defined(USING_GLES2)
-		if (glewInit() != GLEW_OK) {
-			ERROR_LOG(G3D, "glewInit() failed.\n");
-			return;
-		}
+
+#ifndef USING_GLES2
+    // Some core profile drivers elide certain extensions from GL_EXTENSIONS/etc.
+    // glewExperimental allows us to force GLEW to search for the pointers anyway.
+    if (gl_extensions.IsCoreContext)
+        glewExperimental = true;
+    if (GLEW_OK != glewInit()) {
+        printf("Failed to initialize glew!\n");
+    }
+    // Unfortunately, glew will generate an invalid enum error, ignore.
+    if (gl_extensions.IsCoreContext)
+        glGetError();
 #endif
-		glewInitDone = true;
-		CheckGLExtensions();
-	}
-	draw_ = Draw::T3DCreateGLContext();
-	renderManager_ = (GLRenderManager *)draw_->GetNativeObject(Draw::NativeObject::RENDER_MANAGER);
+
+    CheckGLExtensions();
+    draw_ = Draw::T3DCreateGLContext();
+    renderManager_ = (GLRenderManager *)draw_->GetNativeObject(Draw::NativeObject::RENDER_MANAGER);
+    renderManager_->SetInflightFrames(g_Config.iInflightFrames);
+    SetGPUBackend(GPUBackend::OPENGL);
+    draw_->CreatePresets();
 }
 
 void LibretroGLContext::DestroyDrawContext() {