[wasm] Rework encoding of local declarations.

test/mjsunit/wasm/stack.js

Index: test/mjsunit/wasm/stack.js
diff --git a/test/mjsunit/wasm/stack.js b/test/mjsunit/wasm/stack.js
index 573db3032b96142363eb87bbe67b3c2f7a84ff5c..ca1672816507daa620eeda08447246ecc9c6a8cf 100644
--- a/test/mjsunit/wasm/stack.js
+++ b/test/mjsunit/wasm/stack.js
@@ -7,7 +7,7 @@
 load("test/mjsunit/wasm/wasm-constants.js");
 
 function testStack(func, check) {
-  var kBodySize = 2;
+  var kBodySize = 3;
   var kNameFunOffset = kHeaderSize + 22 + kBodySize + 1;
   var kNameMainOffset = kNameFunOffset + 4;
 
@@ -29,6 +29,7 @@ function testStack(func, check) {
       kNameMainOffset, 0, 0, 0,                 // name offset
       kBodySize, 0,
       // main body
+      kDeclNoLocals,
       kExprCallFunction, 0,  // --
       // names
       kDeclEnd,              //  --
@@ -61,12 +62,12 @@ function check_STACK() {
 
 var expected = "Error\n" +
     // The line numbers below will change as this test gains / loses lines..
-    "    at STACK (stack.js:54:11)\n" +  // --
+    "    at STACK (stack.js:55:11)\n" +  // --
     "    at <WASM> (<anonymous>)\n" +  // --
     "    at <WASM> (<anonymous>)\n" +  // --
     "    at <WASM> (<anonymous>)\n" +  // --
-    "    at testStack (stack.js:43:10)\n" +
+    "    at testStack (stack.js:44:10)\n" +
     // TODO(jfb) Add WebAssembly stack here.
-    "    at stack.js:72:1";
+    "    at stack.js:73:1";
 
 testStack(STACK, check_STACK);