lib-mail: message_header_decode_encoded - ensure num is QCOUNT

Satisifies static analyzers

diff --git a/src/lib-mail/message-header-decode.c b/src/lib-mail/message-header-decode.c
index 100560e93e62c5db3f901794640dd5fdd8c28d6b..18f6ca258595bd014cbdaffcca19358ca2d723ba 100644 (file)
--- a/src/lib-mail/message-header-decode.c
+++ b/src/lib-mail/message-header-decode.c
@@ -24,11 +24,14 @@ message_header_decode_encoded(const unsigned char *data, size_t size,
                                break;
                }
        }
+
        if (i+1 >= size || data[i+1] != '=') {
                /* invalid block */
                return 0;
        }
 
+       i_assert(num == QCOUNT);
+
        buffer_append(decodebuf, data, start_pos[0]);
        buffer_append_c(decodebuf, '\0');
        *charsetlen_r = decodebuf->used;