Remove the is_nested bit from the BlockInfo structure.

syzygy/agent/asan/runtime.cc

Index: syzygy/agent/asan/runtime.cc
diff --git a/syzygy/agent/asan/runtime.cc b/syzygy/agent/asan/runtime.cc
index a29be0b1adc29257cb025388d4130977f597d314..b6d240eeeadd8a77b3f6d5ce2b83cb958b7f460b 100644
--- a/syzygy/agent/asan/runtime.cc
+++ b/syzygy/agent/asan/runtime.cc
@@ -924,8 +924,7 @@ void AsanRuntime::WriteCorruptHeapInfo(
     // copy its metadata. It's fine for the upper bound address calculation to
     // overflow to 0, as this represents the end of the 4GB address space.
     ShadowWalker shadow_walker(
-        shadow(), false,
-        reinterpret_cast<const uint8_t*>(corrupt_ranges[i].address),
+        shadow(), reinterpret_cast<const uint8_t*>(corrupt_ranges[i].address),
         reinterpret_cast<const uint8_t*>(corrupt_ranges[i].address) +
             corrupt_ranges[i].length);
     BlockInfo block_info = {};