fix 64bit warnings (use: GYP_DEFINES=skia_arch_width=64 make ... )



git-svn-id: http://skia.googlecode.com/svn/trunk@4464 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/core/SkTDArray.h b/include/core/SkTDArray.h
index 426bb6d..1afd3d0 100644
--- a/include/core/SkTDArray.h
+++ b/include/core/SkTDArray.h
@@ -95,7 +95,7 @@
     /**
      *  Return the number of elements in the array
      */
-    int count() const { return fCount; }
+    int count() const { return (int)fCount; }
 
     /**
      *  return the number of bytes in the array: count * sizeof(T)