Issue #7414: Add missing 'case 'C'' to skipitem() in getargs.c.  This
was causing PyArg_ParseTupleAndKeywords(args, kwargs, "|CC", ...) to
fail with a RuntimeError.  Thanks Case Van Horsen for tracking down
the source of this error.
diff --git a/Python/getargs.c b/Python/getargs.c
index f41cd05..b69aaed 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -1772,6 +1772,7 @@
 	case 'd': /* double */
 	case 'D': /* complex double */
 	case 'c': /* char */
+	case 'C': /* unicode char */
 		{
 			(void) va_arg(*p_va, void *);
 			break;