fix a typo that prevented glTexImage2D codepath to work

Change-Id: I36a3bf9d1d2eacd9b14e00b0a6c53bf88bba381c
diff --git a/services/surfaceflinger/TextureManager.cpp b/services/surfaceflinger/TextureManager.cpp
index 3b326df..0f448e0 100644
--- a/services/surfaceflinger/TextureManager.cpp
+++ b/services/surfaceflinger/TextureManager.cpp
@@ -190,7 +190,7 @@
         return err;
     }
 
-    if (texture->target != GL_TEXTURE_2D)
+    if (texture->target != Texture::TEXTURE_2D)
         return INVALID_OPERATION;
 
     glBindTexture(GL_TEXTURE_2D, texture->name);