Removed confusing defensive programming in GenerateJumpTable.

src/x87/lithium-codegen-x87.cc

Index: src/x87/lithium-codegen-x87.cc
diff --git a/src/x87/lithium-codegen-x87.cc b/src/x87/lithium-codegen-x87.cc
index ac67bb2f748e4918dc2d3e6cb96b79df8c76a759..ded2cd94ae6e08cd7865f075fe18b61e7e594ad3 100644
--- a/src/x87/lithium-codegen-x87.cc
+++ b/src/x87/lithium-codegen-x87.cc
@@ -369,11 +369,8 @@ bool LCodeGen::GenerateJumpTable() {
     Address entry = table_entry->address;
     Deoptimizer::BailoutType type = table_entry->bailout_type;
     int id = Deoptimizer::GetDeoptimizationId(isolate(), entry, type);
-    if (id == Deoptimizer::kNotDeoptimizationEntry) {
-      Comment(";;; jump table entry %d.", i);
-    } else {
-      Comment(";;; jump table entry %d: deoptimization bailout %d.", i, id);
-    }
+    DCHECK_NE(Deoptimizer::kNotDeoptimizationEntry, id);
+    Comment(";;; jump table entry %d: deoptimization bailout %d.", i, id);
     DeoptComment(table_entry->mnemonic, table_entry->reason);
     if (table_entry->needs_frame) {
       DCHECK(!info()->saves_caller_doubles());