Curl_ssl_md5sum: return CURLcode

... since the funciton can fail on OOM. Check this return code.

Coverity CID 1291705.

1 files changed, 7 insertions, 4 deletions

diff --git a/lib/vtls/vtls.c b/lib/vtls/vtls.c
index 6973de42a..12427c17c 100644
--- a/lib/vtls/vtls.c
+++ b/lib/vtls/vtls.c
@@ -828,10 +828,10 @@ CURLcode Curl_pin_peer_pubkey(const char *pinnedpubkey,
 }
 
 #ifndef CURL_DISABLE_CRYPTO_AUTH
-void Curl_ssl_md5sum(unsigned char *tmp, /* input */
-                     size_t tmplen,
-                     unsigned char *md5sum, /* output */
-                     size_t md5len)
+CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */
+                         size_t tmplen,
+                         unsigned char *md5sum, /* output */
+                         size_t md5len)
 {
 #ifdef curlssl_md5sum
   curlssl_md5sum(tmp, tmplen, md5sum, md5len);
@@ -841,9 +841,12 @@ void Curl_ssl_md5sum(unsigned char *tmp, /* input */
   (void) md5len;
 
   MD5pw = Curl_MD5_init(Curl_DIGEST_MD5);
+  if(!MD5pw)
+    return CURLE_OUT_OF_MEMORY;
   Curl_MD5_update(MD5pw, tmp, curlx_uztoui(tmplen));
   Curl_MD5_final(MD5pw, md5sum);
 #endif
+  return CURLE_OK;
 }
 #endif