util/base64: use padding var for calculations

(cherry picked from commit 58e5033a44efcb163619dc95c67021e42a2c1e66)

diff --git a/src/util-base64.c b/src/util-base64.c
index fe5ed9b800457567d15c56459ad91ca79741a6c6..531dac30445720af42d220cac28f5634103ededb 100644 (file)
--- a/src/util-base64.c
+++ b/src/util-base64.c
@@ -157,7 +157,7 @@ Base64Ecode DecodeBase64(uint8_t *dest, uint32_t dest_size, const uint8_t *src,
 
     if (!valid && mode == BASE64_MODE_RFC4648) {
         padding = B64_BLOCK - bbidx;
-        *decoded_bytes += ASCII_BLOCK - (B64_BLOCK - bbidx);
+        *decoded_bytes += ASCII_BLOCK - padding;
         DecodeBase64Block(dptr, b64);
         *consumed_bytes += bbidx;
     }