fix warnings

src/images/SkDecodingImageGenerator.cpp

Index: src/images/SkDecodingImageGenerator.cpp
diff --git a/src/images/SkDecodingImageGenerator.cpp b/src/images/SkDecodingImageGenerator.cpp
index 96c9c3002094f17e79c188fec73408e4056f8807..1e2813660329ad29821704cadf79916df0aab153 100644
--- a/src/images/SkDecodingImageGenerator.cpp
+++ b/src/images/SkDecodingImageGenerator.cpp
@@ -275,10 +275,6 @@ SkImageGenerator* SkDecodingImageGenerator::Create(
         info.fHeight = bitmap.height();
         info.fColorType = opts.fRequestedColorType;
         info.fAlphaType = bitmap.alphaType();
-
-        // Sanity check.
-        SkDEBUGCODE(SkColorType tmp;)
-        SkASSERT(tmp == opts.fRequestedColorType);
     }
     return SkNEW_ARGS(SkDecodingImageGenerator,
                       (data, autoStream.detach(), info,