I would like to thank Joao Antunes for finding this.  I can't believe
I didn't notice this myself.

--- maradns-1.3.05/server/MaraDNS.c.orig	2007-05-15 08:11:08.000000000 -0500
+++ maradns-1.3.05/server/MaraDNS.c	2007-05-15 08:16:44.000000000 -0500
@@ -3112,6 +3112,7 @@
         js_destroy(lookfor);
         udperror(sock,raw,0,0,SERVER_FAIL,"can't create origq string",2,
 			desires_recursion,ect,1);
+        js_destroy(lookfor);
         return JS_ERROR;
         }
 
@@ -3127,6 +3128,7 @@
            a fingerprint check. */
         udperror(sock,raw,0,lookfor,NOT_IMPLEMENTED,"non-0 opcode",2,
 			desires_recursion,ect,1);
+        js_destroy(origq); js_destroy(lookfor);
         return JS_SUCCESS;
         }
 
@@ -3134,9 +3136,11 @@
     /* Down here so we can echo the question */
     if(*(raw->string + length + 14) != 0 &&
        *(raw->string + length + 15) != 1) {
-        if(no_fingerprint != 1)
+        if(no_fingerprint != 1) {
             udperror(sock,raw,0,lookfor,NOT_IMPLEMENTED,"Class not 1",2,
 			    desires_recursion,ect,1);
+            }
+        js_destroy(origq); js_destroy(lookfor);
         return JS_ERROR;
         }
 
@@ -3891,7 +3895,9 @@
        gotos */
     serv_fail:
         js_destroy(origq);
-        js_destroy(lc);
+        if(lc != 0) {
+            js_destroy(lc);
+            }
         if(no_fingerprint != 1)
             udperror(sock,raw,0,lookfor,SERVER_FAIL,
                      "serv_fail in proc_query",2,desires_recursion,ect,1);