check for too-large rowBytes

src/core/SkMallocPixelRef.cpp

Index: src/core/SkMallocPixelRef.cpp
diff --git a/src/core/SkMallocPixelRef.cpp b/src/core/SkMallocPixelRef.cpp
index f4ba969662589131351aa7efa6141a1f9b53267b..e0d937ec113e5bde15b9a0456b31edf2a9039513 100644
--- a/src/core/SkMallocPixelRef.cpp
+++ b/src/core/SkMallocPixelRef.cpp
@@ -56,8 +56,8 @@ SkMallocPixelRef* SkMallocPixelRef::NewAllocate(const SkImageInfo& info,
         return NULL;
     }
 
-    int32_t minRB = SkToS32(info.minRowBytes());
-    if (minRB < 0) {
+    int64_t minRB = info.minRowBytes64();

[caryclark, 2015/01/23 15:10:09]

signature returns uint64_t

[reed1, 2015/01/23 15:35:39]

trying a cast instead, to stay consistent with the following code

+    if (!sk_64_isS32(minRB)) {

[caryclark, 2015/01/23 15:10:10]

... then this would need to be sk_64_asS32(uint64_t ) ... (which doesn't exist
yet)

         return NULL;    // allocation will be too large
     }
     if (requestedRowBytes > 0 && (int32_t)requestedRowBytes < minRB) {