Fix assignment of 565 format when creating native client buffers.

Change-Id: Ia379f469a6e18e1f31748dc97aa596d03e507f84
Fixes: 29279664
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index 24394a9..e793852 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -1847,7 +1847,7 @@
         }
     } else if (red_size == 5 && green_size == 6 && blue_size == 5 &&
                alpha_size == 0) {
-        format == HAL_PIXEL_FORMAT_RGB_565;
+        format = HAL_PIXEL_FORMAT_RGB_565;
     } else {
         ALOGE("Invalid native pixel format { r=%d, g=%d, b=%d, a=%d }",
                 red_size, green_size, blue_size, alpha_size);