Removes warnings generated by gcc and clang.



git-svn-id: http://skia.googlecode.com/svn/trunk@2651 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 2ccd843..da26bc6 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -1721,7 +1721,7 @@
             kRenderTarget_GrTextureFlagBit,
             kNone_GrAALevel,
             width, height,
-            config
+            { config }
         };
         GrAutoScratchTexture ast(this, desc);
         GrTexture* texture = ast.texture();
@@ -1773,7 +1773,7 @@
     this->flush(kForceCurrentRenderTarget_FlushBit);
 
     const GrTextureDesc desc = {
-        kNone_GrTextureFlags, kNone_GrAALevel, width, height, config
+        kNone_GrTextureFlags, kNone_GrAALevel, width, height, { config }
     };
     GrAutoScratchTexture ast(this, desc);
     GrTexture* texture = ast.texture();