Win32: fallback to normal output if WriteConsoleW() fails

This fixes console logs on Wine for me.

src/text/unicode.c

@@ -74,18 +74,15 @@ int utf8_vfprintf( FILE *stream, const char *fmt, va_list ap )
         {
             HANDLE h = (HANDLE)((uintptr_t)_get_osfhandle (fd));
             DWORD out;
-
             /* XXX: It is not clear whether WriteConsole() wants the number of
              * Unicode characters or the size of the wchar_t array. */
-            WriteConsoleW (h, wide, wcslen (wide), &out, NULL);
+            BOOL ok = WriteConsoleW (h, wide, wcslen (wide), &out, NULL);
             free (wide);
+            if (ok)
+                goto out;
         }
-        else
-            res = -1;
     }
-    else
 # endif
-    {
     char *ansi = ToANSI (str);
     if (ansi != NULL)
     {
@@ -94,7 +91,7 @@ int utf8_vfprintf( FILE *stream, const char *fmt, va_list ap )
     }
     else
         res = -1;
-    }
+out:
     free (str);
     return res;
 #endif