From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 27 May 2004 07:09:21 +0000 (+0000)
Subject: better checks to avoid free(NULL)
X-Git-Tag: curl-7_12_0~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5690a2b493d2df6de999c451dd2dafb6b89f71e7;p=thirdparty%2Fcurl.git

better checks to avoid free(NULL)
---

diff --git a/ares/ares__get_hostent.c b/ares/ares__get_hostent.c
index f05d712991..bf99627e2f 100644
--- a/ares/ares__get_hostent.c
+++ b/ares/ares__get_hostent.c
@@ -140,11 +140,11 @@ int ares__get_hostent(FILE *fp, struct hostent **host)
       memcpy(hostent->h_addr_list[0], &addr, sizeof(struct in_addr));
       hostent->h_addr_list[1] = NULL;
       *host = hostent;
-      if(line)
-        free(line);
+      free(line);
       return ARES_SUCCESS;
     }
-  free(line);
+  if(line)
+    free(line);
 
   if (status == ARES_SUCCESS)
     {
@@ -160,7 +160,7 @@ int ares__get_hostent(FILE *fp, struct hostent **host)
 	    }
           if(hostent->h_aliases)
             free(hostent->h_aliases);
-	  if (hostent->h_addr_list)
+	  if (hostent->h_addr_list && hostent->h_addr_list[0])
 	    free(hostent->h_addr_list[0]);
           if(hostent->h_addr_list)
             free(hostent->h_addr_list);