msvcp90: fix parsing in num_get<>::_Getifld

[Piotr Caban]

On 10/11/12 00:27, Daniel Lehman wrote:
-    if(!base && first->strbuf && first->val==digits[0]) {
+    if(first->strbuf && first->val==digits[0]) {
+        found_zero = TRUE;
          istreambuf_iterator_wchar_inc(first);
          if(first->strbuf && (first->val==mb_to_wc('x', &this->cvt) || 
first->val==mb_to_wc('x', &this->cvt))) {

There's a comparision to 'x' 2 times, one of them should be 'X'.

Cheers,
Piotr