fix over-read in %ls with non-wide scanf

diff --git a/src/stdio/vfscanf.c b/src/stdio/vfscanf.c
index 8be0d91c6689a7fe697b3a03a0444b863aef479d..73294cdb990770cb3ea65a0036c17f41f1b996ae 100644 (file)
--- a/src/stdio/vfscanf.c
+++ b/src/stdio/vfscanf.c
@@ -312,6 +312,7 @@ int vfscanf(FILE *f, const char *fmt, va_list ap)
                                if (readwc(c, &wcs, &st) < 0)
                                        goto input_fail;
                        }
+                       shunget(f);
                        if (!mbsinit(&st)) goto input_fail;
                        if (dest) *wcs++ = 0;
                        break;