fix for segfault in rrd_cgi: caused by freeing a invalid address when printing an...

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@1724 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/program/src/rrd_cgi.c b/program/src/rrd_cgi.c
index 6b1cf36dae58059440df5965b35d508d3c1c00c4..9f0a0bd879afe822e28e9ec759a782955a597bda 100644 (file)
--- a/program/src/rrd_cgi.c
+++ b/program/src/rrd_cgi.c
@@ -305,6 +305,7 @@ static void calfree (void){
     if (calcpr) {
            free(calcpr);
     }
+    calcpr=NULL;
   }
 }
 
@@ -778,7 +779,6 @@ char* drawgraph(long argc, const char **args){
       char *err = malloc((strlen(rrd_get_error())+DS_NAM_SIZE)*sizeof(char));
       sprintf(err, "[ERROR: %s]",rrd_get_error());
       rrd_clear_error();
-      calfree();
       return err;
     }
   }