Revert of [wasm] Indirect calls without function table cause validation errors.

src/compiler/wasm-compiler.cc

Index: src/compiler/wasm-compiler.cc
diff --git a/src/compiler/wasm-compiler.cc b/src/compiler/wasm-compiler.cc
index c81d2c8df2cd60f038d1c6853f6946491f7dab56..baa6b7b41b0d9bc0b9dd3baa1a004c7cc169f00c 100644
--- a/src/compiler/wasm-compiler.cc
+++ b/src/compiler/wasm-compiler.cc
@@ -2168,7 +2168,15 @@
   uint32_t table_index = 0;
   wasm::FunctionSig* sig = module_->GetSignature(sig_index);
 
-  DCHECK(module_->IsValidTable(table_index));
+  if (!module_->IsValidTable(table_index)) {
+    // No function table. Generate a trap and return a constant.
+    trap_->AddTrapIfFalse(wasm::kTrapFuncInvalid, Int32Constant(0), position);
+    (*rets) = Buffer(sig->return_count());
+    for (size_t i = 0; i < sig->return_count(); i++) {
+      (*rets)[i] = trap_->GetTrapValue(sig->GetReturn(i));
+    }
+    return trap_->GetTrapValue(sig);
+  }
 
   EnsureFunctionTableNodes();
   MachineOperatorBuilder* machine = jsgraph()->machine();