Add back a static_cast<int32_t> to assembler-arm.cc to fix WebView build.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index dc57cf4744a673a7846bd80f029001192e1dd905..7df9202324945a0f244319e7261e73934b8af05a 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -3685,7 +3685,8 @@ void ConstantPoolBuilder::Populate(Assembler* assm,
       if (type == ConstantPoolArray::INT64) {
         constant_pool->set_at_offset(offset, rinfo.data64());
       } else if (type == ConstantPoolArray::INT32) {
-        constant_pool->set_at_offset(offset, rinfo.data());
+        constant_pool->set_at_offset(offset,
+                                     static_cast<int32_t>(rinfo.data()));
       } else if (type == ConstantPoolArray::CODE_PTR) {
         constant_pool->set_at_offset(offset,
                                      reinterpret_cast<Address>(rinfo.data()));