jscript: Fix do while loop parsing.

dlls/jscript/parser.y

@@ -386,7 +386,7 @@ IfStatement
 
 /* ECMA-262 3rd Edition    12.6 */
 IterationStatement
-        : kDO Statement kWHILE '(' Expression ')' ';'
+        : kDO Statement kWHILE '(' Expression ')' semicolon_opt
                                 { $$ = new_while_statement(ctx, TRUE, $5, $2); }
         | kWHILE '(' Expression ')' Statement
                                 { $$ = new_while_statement(ctx, FALSE, $3, $5); }

dlls/jscript/tests/lang.js

@@ -672,6 +672,13 @@ do {
 ok(tmp === 1, "tmp !== 1");
 
 tmp = 0;
+do {
+    ok(tmp < 4, "tmp >= 4");
+    tmp++;
+} while(tmp < 4)
+ok(tmp === 4, "tmp !== 4")
+
+tmp = 0;
 while(tmp < 4) {
     tmp++;
     if(tmp === 2) {