Fixing cpplint readability/casting issues

Change-Id: I6821da0e23737995a9b884a04e9b63fac640cd05
diff --git a/compiler/dex/quick/gen_invoke.cc b/compiler/dex/quick/gen_invoke.cc
index 8840526..13a59bf 100644
--- a/compiler/dex/quick/gen_invoke.cc
+++ b/compiler/dex/quick/gen_invoke.cc
@@ -1113,7 +1113,7 @@
     LoadWordDisp(TargetReg(kSelf), offset, rl_result.low_reg);
   } else {
     CHECK(cu_->instruction_set == kX86);
-    ((X86Mir2Lir*)this)->OpRegThreadMem(kOpMov, rl_result.low_reg, offset);
+    reinterpret_cast<X86Mir2Lir*>(this)->OpRegThreadMem(kOpMov, rl_result.low_reg, offset);
   }
   StoreValue(rl_dest, rl_result);
   return true;