jscript: Make sure to jump out of switch before entering implicit default clausule.

dlls/jscript/compile.c

@@ -1516,6 +1516,9 @@ static HRESULT compile_switch_statement(compiler_ctx_t *ctx, switch_statement_t
     assert(i == case_cnt);
 
     if(!have_default) {
+        hres = push_instr_uint(ctx, OP_jmp, stat_ctx.break_label);
+        if(FAILED(hres))
+            return hres;
         instr_ptr(ctx, default_jmp)->arg1.uint = ctx->code_off;
         if(!push_instr(ctx, OP_undefined))
             return E_OUTOFMEMORY;

dlls/jscript/tests/lang.js

@@ -726,6 +726,16 @@ case 3:
     ok(false, "unexpected case 3");
 }
 
+(function() {
+    var i=0;
+
+    switch(1) {
+    case 1:
+        i++;
+    }
+    return i;
+})();
+
 tmp = eval("1");
 ok(tmp === 1, "eval(\"1\") !== 1");
 eval("{ ok(tmp === 1, 'eval: tmp !== 1'); } tmp = 2;");