libratbox: Add comment that case fallthrough is deliberate.

diff --git a/libratbox/src/ratbox_lib.c b/libratbox/src/ratbox_lib.c
index 4d11fd3338783dd8fcb53077437589efd215722f..2a8af723001102c8ee54662a32aeeaef09640dce 100644 (file)
--- a/libratbox/src/ratbox_lib.c
+++ b/libratbox/src/ratbox_lib.c
@@ -415,6 +415,7 @@ rb_base64_decode(const unsigned char *str, int length, int *ret)
                        return NULL;
                case 2:
                        k++;
+                       /* FALLTHROUGH */
                case 3:
                        result[k++] = 0;
                }