Changed some int casts to intptr_t.

src/checks.h

Index: src/checks.h
diff --git a/src/checks.h b/src/checks.h
index 0ff79afbcab6b98fe4f83c861f1b788dc7b1b4c3..b302e5beee04da3c02604d6357ab2a0f8c610358 100644
--- a/src/checks.h
+++ b/src/checks.h
@@ -254,7 +254,7 @@ template <int> class StaticAssertionHelper { };
 
 
 #define ASSERT_TAG_ALIGNED(address) \
-  ASSERT((reinterpret_cast<int>(address) & kHeapObjectTagMask) == 0)
+  ASSERT((reinterpret_cast<intptr_t>(address) & kHeapObjectTagMask) == 0)
 
 #define ASSERT_SIZE_TAG_ALIGNED(size) ASSERT((size & kHeapObjectTagMask) == 0)