CRYPTO_mem_leaks should ignore it's BIO argument.

CRYPTO_mem_leaks takes a BIO* argument.  It's not a leak if that
argument hasn't been free'd.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

apps/openssl.c

@@ -527,8 +527,7 @@ int main(int argc, char *argv[])
     BIO_free(bio_in);
     BIO_free_all(bio_out);
     apps_shutdown();
-    /*CRYPTO_mem_leaks(bio_err);
-     */
+    CRYPTO_mem_leaks(bio_err);
     BIO_free(bio_err);
     return (ret);
 }

crypto/mem_dbg.c

@@ -623,6 +623,7 @@ void CRYPTO_dbg_realloc(void *addr1, void *addr2, int num,
 typedef struct mem_leak_st {
     BIO *bio;
     int chunks;
+    int seen;
     long bytes;
 } MEM_LEAK;
 
@@ -637,8 +638,11 @@ static void print_leak_doall_arg(const MEM *m, MEM_LEAK *l)
 
 #define BUF_REMAIN (sizeof buf - (size_t)(bufp - buf))
 
-    if (m->addr == (char *)l->bio)
+    /* Is one "leak" the BIO we were given? */
+    if (m->addr == (char *)l->bio) {
+        l->seen = 1;
         return;
+    }
 
     if (options & V_CRYPTO_MDEBUG_TIME) {
         lcl = localtime(&m->time);
@@ -722,8 +726,14 @@ void CRYPTO_mem_leaks(BIO *b)
     ml.bio = b;
     ml.bytes = 0;
     ml.chunks = 0;
+    ml.seen = 0;
     if (mh != NULL)
         lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(print_leak), MEM_LEAK, &ml);
+    /* Don't count the BIO that was passed in as a "leak" */
+    if (ml.seen && ml.chunks >= 1 && ml.bytes >= (int)sizeof (*b)) {
+        ml.chunks--;
+        ml.bytes -= (int)sizeof (*b);
+    }
     if (ml.chunks != 0) {
         BIO_printf(b, "%ld bytes leaked in %d chunks\n", ml.bytes, ml.chunks);
 #ifdef CRYPTO_MDEBUG_ABORT