ARM: fix constant pool length emitted for disassembler.

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 b39d9ee1227e255b1af96ef76ea81e46353ee97b..2678a5a6b5eae23a7e8efe4f1fd6d3d71fb28b78 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -3000,7 +3000,8 @@ void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
 
     // Put down constant pool marker "Undefined instruction".
     // The data size helps disassembly know what to print.
-    emit(kConstantPoolMarker | EncodeConstantPoolLength(size_after_marker));
+    emit(kConstantPoolMarker |
+         EncodeConstantPoolLength(size_after_marker / kPointerSize));
 
     if (require_64_bit_align) {
       emit(kConstantPoolMarker);