Fix minor typo in prep_cif.c
diff --git a/Modules/_ctypes/libffi/src/prep_cif.c b/Modules/_ctypes/libffi/src/prep_cif.c
index 8d76718..2db65ce 100644
--- a/Modules/_ctypes/libffi/src/prep_cif.c
+++ b/Modules/_ctypes/libffi/src/prep_cif.c
@@ -114,8 +114,8 @@
 	/* This is not what the ABI says, but is what is really implemented */
 	switch (size) {
 	case 1: case 2: case 4: case 8: return 0;
-	return 1;
 	}
+	return 1;
 }
 #endif