Fix self-assignment 

Review URL: http://codereview.appspot.com/4631047/



git-svn-id: http://skia.googlecode.com/svn/trunk@1637 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGpuGL.cpp b/gpu/src/GrGpuGL.cpp
index e40024a..60d7fbc 100644
--- a/gpu/src/GrGpuGL.cpp
+++ b/gpu/src/GrGpuGL.cpp
@@ -636,7 +636,7 @@
         texDesc.fAllocWidth  = texDesc.fContentWidth  = desc.fWidth;
         texDesc.fAllocHeight = texDesc.fContentHeight = desc.fHeight;
 
-        texDesc.fFormat             = texDesc.fFormat;
+        texDesc.fFormat             = desc.fConfig;
         texDesc.fOrientation        = GrGLTexture::kBottomUp_Orientation;
         texDesc.fStencilBits        = desc.fStencilBits;
         texDesc.fTextureID          = desc.fPlatformTexture;