Add missing semicolon() calls to debugger and throw statement parsers

Issue #5

acorn.js

@@ -1067,6 +1067,7 @@
 
     case _debugger:
       next();
+      semicolon();
       return finishNode(node, "DebuggerStatement");
 
     case _do:
@@ -1166,6 +1167,7 @@
       if (newline.test(input.slice(lastEnd, tokStart)))
         raise(lastEnd, "Illegal newline after throw");
       node.argument = parseExpression();
+      semicolon();
       return finishNode(node, "ThrowStatement");
 
     case _try:

index.html

@@ -750,6 +750,7 @@ continue to.</p>             </td>             <td class="code">               <
 
     <span class="k">case</span> <span class="nx">_debugger</span><span class="o">:</span>
       <span class="nx">next</span><span class="p">();</span>
+      <span class="nx">semicolon</span><span class="p">();</span>
       <span class="k">return</span> <span class="nx">finishNode</span><span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="s2">&quot;DebuggerStatement&quot;</span><span class="p">);</span>
 
     <span class="k">case</span> <span class="nx">_do</span><span class="o">:</span>
@@ -839,6 +840,7 @@ adding statements to.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="nx">newline</span><span class="p">.</span><span class="nx">test</span><span class="p">(</span><span class="nx">input</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="nx">lastEnd</span><span class="p">,</span> <span class="nx">tokStart</span><span class="p">)))</span>
         <span class="nx">raise</span><span class="p">(</span><span class="nx">lastEnd</span><span class="p">,</span> <span class="s2">&quot;Illegal newline after throw&quot;</span><span class="p">);</span>
       <span class="nx">node</span><span class="p">.</span><span class="nx">argument</span> <span class="o">=</span> <span class="nx">parseExpression</span><span class="p">();</span>
+      <span class="nx">semicolon</span><span class="p">();</span>
       <span class="k">return</span> <span class="nx">finishNode</span><span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="s2">&quot;ThrowStatement&quot;</span><span class="p">);</span>
 
     <span class="k">case</span> <span class="nx">_try</span><span class="o">:</span>

test/tests.js

@@ -21634,19 +21634,6 @@ test("throw x;", {
           line: 1,
           column: 0
         },
-        end: {
-          line: 1,
-          column: 7
-        }
-      }
-    },
-    {
-      type: "EmptyStatement",
-      loc: {
-        start: {
-          line: 1,
-          column: 7
-        },
         end: {
           line: 1,
           column: 8
@@ -22790,19 +22777,6 @@ test("debugger;", {
           line: 1,
           column: 0
         },
-        end: {
-          line: 1,
-          column: 8
-        }
-      }
-    },
-    {
-      type: "EmptyStatement",
-      loc: {
-        start: {
-          line: 1,
-          column: 8
-        },
         end: {
           line: 1,
           column: 9