Fix CodecSubset benches seg faults for kIndex8

bench/subset/SubsetBenchPriv.h

Index: bench/subset/SubsetBenchPriv.h
diff --git a/bench/subset/SubsetBenchPriv.h b/bench/subset/SubsetBenchPriv.h
index e0eb2ff82676dde1a6401fd948ecbd1a793a35ab..6a1628a0888e636113261ed53c2e089250920862 100644
--- a/bench/subset/SubsetBenchPriv.h
+++ b/bench/subset/SubsetBenchPriv.h
@@ -32,4 +32,14 @@ static const char* get_color_name(SkColorType colorType) {
     }
 }
 
+static inline void alloc_pixels(SkBitmap bitmap, SkColorType colorType, int width, int height,

[scroggo, 2015/06/30 18:48:50]

SkBitmap is a parameter passed by value, so this will not affect the bitmap you
pass to this function. You should pass a pointer to an SkBitmap.

[msarett, 2015/06/30 19:06:38]

Of course thanks!  Not sure how I didn't catch that.

+        SkPMColor* colors, int colorCount) {
+    if (kIndex_8_SkColorType == colorType) {
+        SkAutoTUnref<SkColorTable> colorTable(SkNEW_ARGS(SkColorTable, (colors, colorCount));
+        bitmap.allocPixels(info.makeWH(width, height), NULL, colorTable);
+    } else {
+        bitmap.allocPixels(info.makeWH(width, height));
+    }
+}
+
 #endif // SubsetBenchPriv_DEFINED