Index: lib/sendmsg.c
===================================================================
--- lib/sendmsg.c	(revision 6110)
+++ lib/sendmsg.c	(working copy)
@@ -482,7 +482,10 @@
 			}
 
 			if (oneres == BB_OK) {
-				if (response && response->respstr) addtobuffer(response->respstr, respstr);
+				if (respstr && response && response->respstr) {
+					addtobuffer(response->respstr, respstr);
+					xfree(respstr);
+				}
 				first = 0;
 			}
 		}