Fix setting the EGL context.

src/GLES2/libEGL/libEGL.cpp

@@ -871,6 +871,7 @@ EGLBoolean EGLAPIENTRY eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurfac
         egl::setCurrentDisplay(dpy);
         egl::setCurrentDrawSurface(draw);
         egl::setCurrentReadSurface(read);
+		egl::setCurrentContext(ctx);
 
         gl::makeCurrent(context, display, static_cast<egl::Surface*>(draw));
 

src/GLES2/libEGL/main.cpp

@@ -42,6 +42,7 @@ static void eglAttachThread()
         current->display = EGL_NO_DISPLAY;
         current->drawSurface = EGL_NO_SURFACE;
         current->readSurface = EGL_NO_SURFACE;
+		current->context = EGL_NO_CONTEXT;
 	}
 }