fix [3258603] 'Quadrant' benchmark crashes inside eglQueryContext on GB/Crespo

eglQueryContext(..., EGL_CONFIG_ID, ...) is dereferencing an uninitialized pointer
due to a typo.

Change-Id: I100addf3150f19cb6dfbce9987fb5239dd240878

Author: pixelflinger

opengl/libs/EGL/egl.cpp

@@ -218,8 +218,8 @@ struct egl_context_t : public egl_object_t
 
     egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config,
             int impl, egl_connection_t const* cnx, int version) 
-    : dpy(dpy), context(context), read(0), draw(0), impl(impl), cnx(cnx),
-      version(version)
+    : dpy(dpy), context(context), config(config), read(0), draw(0), impl(impl),
+      cnx(cnx), version(version)
     {
     }
     EGLDisplay                  dpy;