curl_sasl: revert the goto for error bailout

They were added because of an older code path that used allocations and
should not have been left in the code. With this change the logic goes
back to how it was.

lib/curl_sasl.c

@@ -456,10 +456,8 @@ CURLcode Curl_sasl_create_digest_md5_message(struct SessionHandle *data,
 
   /* So far so good, now calculate A1 and H(A1) according to RFC 2831 */
   ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
-  if(!ctxt) {
-    result = CURLE_OUT_OF_MEMORY;
-    goto fail;
-  }
+  if(!ctxt)
+    return CURLE_OUT_OF_MEMORY;
 
   Curl_MD5_update(ctxt, (const unsigned char *) userp,
                   curlx_uztoui(strlen(userp)));
@@ -472,10 +470,8 @@ CURLcode Curl_sasl_create_digest_md5_message(struct SessionHandle *data,
   Curl_MD5_final(ctxt, digest);
 
   ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
-  if(!ctxt) {
-    result = CURLE_OUT_OF_MEMORY;
-    goto fail;
-  }
+  if(!ctxt)
+    return CURLE_OUT_OF_MEMORY;
 
   Curl_MD5_update(ctxt, (const unsigned char *) digest, MD5_DIGEST_LEN);
   Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
@@ -495,10 +491,8 @@ CURLcode Curl_sasl_create_digest_md5_message(struct SessionHandle *data,
 
   /* Calculate H(A2) */
   ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
-  if(!ctxt) {
-    result = CURLE_OUT_OF_MEMORY;
-    goto fail;
-  }
+  if(!ctxt)
+    return CURLE_OUT_OF_MEMORY;
 
   Curl_MD5_update(ctxt, (const unsigned char *) method,
                   curlx_uztoui(strlen(method)));
@@ -512,10 +506,8 @@ CURLcode Curl_sasl_create_digest_md5_message(struct SessionHandle *data,
 
   /* Now calculate the response hash */
   ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
-  if(!ctxt) {
-    result = CURLE_OUT_OF_MEMORY;
-    goto fail;
-  }
+  if(!ctxt)
+    return CURLE_OUT_OF_MEMORY;
 
   Curl_MD5_update(ctxt, (const unsigned char *) HA1_hex, 2 * MD5_DIGEST_LEN);
   Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
@@ -545,16 +537,12 @@ CURLcode Curl_sasl_create_digest_md5_message(struct SessionHandle *data,
                      "qop=%s",
                      userp, realm, nonce,
                      cnonce, nonceCount, uri, resp_hash_hex);
-  if(!response) {
-    result = CURLE_OUT_OF_MEMORY;
-    goto fail;
-  }
+  if(!response)
+    return CURLE_OUT_OF_MEMORY;
 
   /* Base64 encode the response */
   result = Curl_base64_encode(data, response, 0, outptr, outlen);
 
-  fail:
-
   free(response);
   return result;
 }