Fix mask from change r1155. (I blame the mistake on skipping afternoon coffee :))



git-svn-id: http://skia.googlecode.com/svn/trunk@1161 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGpuGLShaders2.cpp b/gpu/src/GrGpuGLShaders2.cpp
index 94b941f..dbd50bf 100644
--- a/gpu/src/GrGpuGLShaders2.cpp
+++ b/gpu/src/GrGpuGLShaders2.cpp
@@ -250,7 +250,7 @@
 }
 
 static inline uint32_t swapouter(uint32_t x) {
-    return (x & 0x00ff00) | (x << 24) | (x >> 24);
+    return (x & 0x00ffff00) | (x << 24) | (x >> 24);
 }
 
 GrGpuGLShaders2::ProgramCache::HashKey::HashKey(const ProgramDesc& desc) {