fix build

Change-Id: Ibdc45f1794e7ef60dc1ca0ff85c5cc4dff84c3fa
diff --git a/driver/rsdGL.cpp b/driver/rsdGL.cpp
index b53a68c..7acc054 100644
--- a/driver/rsdGL.cpp
+++ b/driver/rsdGL.cpp
@@ -340,9 +340,9 @@
 
     dc->gl.gl.OES_texture_npot = NULL != strstr((const char *)dc->gl.gl.extensions,
                                                 "GL_OES_texture_npot");
-    dc->gl.gl.GL_IMG_texture_npot = NULL != strstr((const char *)dc->gl.gl.extensions,
+    dc->gl.gl.IMG_texture_npot = NULL != strstr((const char *)dc->gl.gl.extensions,
                                                    "GL_IMG_texture_npot");
-    dc->gl.gl.GL_NV_texture_npot_2D_mipmap = NULL != strstr((const char *)dc->gl.gl.extensions,
+    dc->gl.gl.NV_texture_npot_2D_mipmap = NULL != strstr((const char *)dc->gl.gl.extensions,
                                                             "GL_NV_texture_npot_2D_mipmap");
     dc->gl.gl.EXT_texture_max_aniso = 1.0f;
     bool hasAniso = NULL != strstr((const char *)dc->gl.gl.extensions,