[PATCH libICE 08/13] add check for malloc

[walter harms]

add check for malloc

fix a potential null pointer deference error and
release already allocated memory

Signed-off-by: Walter Harms <wharms at bfs.de>

---
 src/setauth.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/setauth.c b/src/setauth.c
index 1017b02..1f3e5cc 100644
--- a/src/setauth.c
+++ b/src/setauth.c
@@ -102,6 +102,19 @@ IceSetPaAuthData (
             entries[i].auth_data_length;
 	_IcePaAuthDataEntries[j].auth_data = malloc (
             entries[i].auth_data_length);
+	if (! _IcePaAuthDataEntries[j].auth_data)
+	  {
+	    /*
+	       we can not inform the user about a botched update
+	       but we can release the memory we already have
+	    */
+
+	    free(_IcePaAuthDataEntries[j].protocol_name);
+	    free(_IcePaAuthDataEntries[j].network_id);
+	    free(_IcePaAuthDataEntries[j].auth_name);
+	    _IcePaAuthDataEntries[j].auth_data_length = 0;
+	    return;
+	  }
 	memcpy (_IcePaAuthDataEntries[j].auth_data,
             entries[i].auth_data, entries[i].auth_data_length);
     }
-- 
2.1.4