Memory leak fix.

diff --git a/crypto/pem/pem_lib.c b/crypto/pem/pem_lib.c
index e921cc4c1286c694a2eae0e06eb221916103101b..7a383f3dffb47cfc3fb166496e69c39c181aecc1 100644 (file)
--- a/crypto/pem/pem_lib.c
+++ b/crypto/pem/pem_lib.c
@@ -537,7 +537,7 @@ int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data,
             long len)
        {
        int nlen,n,i,j,outl;
-       unsigned char *buf;
+       unsigned char *buf = NULL;
        EVP_ENCODE_CTX ctx;
        int reason=ERR_R_BUF_LIB;
        
@@ -557,7 +557,7 @@ int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data,
                        goto err;
                }
 
-       buf=(unsigned char *)OPENSSL_malloc(PEM_BUFSIZE*8);
+       buf = OPENSSL_malloc(PEM_BUFSIZE*8);
        if (buf == NULL)
                {
                reason=ERR_R_MALLOC_FAILURE;
@@ -578,12 +578,15 @@ int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data,
        EVP_EncodeFinal(&ctx,buf,&outl);
        if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err;
        OPENSSL_free(buf);
+       buf = NULL;
        if (    (BIO_write(bp,"-----END ",9) != 9) ||
                (BIO_write(bp,name,nlen) != nlen) ||
                (BIO_write(bp,"-----\n",6) != 6))
                goto err;
        return(i+outl);
 err:
+       if (buf)
+               OPENSSL_free(buf);
        PEMerr(PEM_F_PEM_WRITE_BIO,reason);
        return(0);
        }