md5: fix wrong sizeof argument (SIZEOF_MISMATCH)

Summary: fixes CID: 222382

Reviewers: raster, zmike, cedric, devilhorns

Reviewed By: devilhorns

Subscribers: cedric, seoz, sachin.dev

Differential Revision: https://phab.enlightenment.org/D3125

src/modules/everything/md5.c

@@ -156,7 +156,7 @@ MD5Final(unsigned char digest[16], MD5_CTX *ctx)
    MD5Transform(ctx->buf, (uint32_t *)ctx->in);
    byteReverse((unsigned char *)ctx->buf, 4);
    memcpy(digest, ctx->buf, 16);
-   memset((char *)ctx, 0, sizeof(ctx)); /* In case it's sensitive */
+   memset((char *)ctx, 0, sizeof(*ctx)); /* In case it's sensitive */
 }
 
 /* The four core functions - F1 is optimized somewhat */